Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (149)

Search Parameters:
Keywords = removable appliance

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
12 pages, 251 KiB  
Article
Pain Perception and Dietary Impact in Fixed Orthodontic Appliances vs. Clear Aligners: An Observational Study
by Bianca Maria Negruțiu, Cristina Paula Costea, Alexandru Nicolae Pîrvan, Diana-Ioana Gavra, Claudia Judea Pusta, Ligia Luminița Vaida, Abel Emanuel Moca, Raluca Iurcov and Claudia Elena Staniș
J. Clin. Med. 2025, 14(14), 5060; https://doi.org/10.3390/jcm14145060 - 17 Jul 2025
Viewed by 278
Abstract
Background and Objectives: Orthodontic treatment, whether fixed or removable, offers several benefits, including improved aesthetics, enhanced oral function, and increased self-confidence. However, it may also cause discomfort and pain, particularly following adjustment visits. This study aimed to assess pain characteristics (latency and continuity), [...] Read more.
Background and Objectives: Orthodontic treatment, whether fixed or removable, offers several benefits, including improved aesthetics, enhanced oral function, and increased self-confidence. However, it may also cause discomfort and pain, particularly following adjustment visits. This study aimed to assess pain characteristics (latency and continuity), food impairment, weight loss, and analgesic use in relation to treatment duration and appliance type. Methods: This observational study included 160 orthodontic patients who completed a structured questionnaire comprising 13 single-choice items. The questionnaire assessed age, gender, residential environment, educational status, type and duration of orthodontic treatment, pain characteristics (duration, latency, continuity), food impairment, and analgesic use. Inclusion criteria specified patients with moderate anterior crowding undergoing fixed orthodontic treatment or treatment with clear aligners on both arches, for at least one month. All fixed appliance cases involved 0.022-inch-slot Roth prescription brackets. Results: Patients undergoing fixed orthodontic treatment reported a higher frequency of pain (91.4%), greater need for analgesics (95.2%), and more food impairment compared to those with clear aligners. Patients treated for less than 6 months more frequently reported pain lasting 1 week (57.1%), while those treated for 1–2 years more commonly reported pain lasting several days (43.8%). Conclusions: Fixed orthodontic appliances are associated with greater discomfort, longer pain latency, more frequent analgesic use, and higher dietary impact compared to clear aligners. These findings emphasize the importance of personalized patient counseling and proactive pain management to improve compliance, enhance quality of life, and support informed decision-making in orthodontic care. Full article
(This article belongs to the Special Issue Orthodontics: State of the Art and Perspectives)
53 pages, 2879 KiB  
Systematic Review
Hypersensitivity in Orthodontics: A Systematic Review of Oral and Extra-Oral Reactions
by Alessandra Amato, Stefano Martina, Giuseppina De Benedetto, Ambrosina Michelotti, Massimo Amato and Federica Di Spirito
J. Clin. Med. 2025, 14(13), 4766; https://doi.org/10.3390/jcm14134766 - 5 Jul 2025
Viewed by 449
Abstract
Background/Objectives: This systematic review analyzed the epidemiologic and macro/microscopic features of manifestations of hypersensitivity reactions with oral and extra-oral involvement in orthodontic patients with fixed (FAs) or removable (RAs) appliances or clear aligners (CAs), and evaluated them based on patient and treatment [...] Read more.
Background/Objectives: This systematic review analyzed the epidemiologic and macro/microscopic features of manifestations of hypersensitivity reactions with oral and extra-oral involvement in orthodontic patients with fixed (FAs) or removable (RAs) appliances or clear aligners (CAs), and evaluated them based on patient and treatment characteristics to provide clinical recommendations. Methods: The study protocol followed the PRISMA guidelines and was registered on PROSPERO (CRD42024517942). Results: Thirty-one studies were qualitatively assessed and synthetized, involving 858 subjects (114 males and 714 females, 9–49 years old), of whom there were 86 with a history of allergy, and 743 wearing recorded appliances (FAs = 656, FAs and RAs = 81, intra- and extra-oral RAs = 3, CAs = 3), with a mean treatment duration of 21.5 months (6 weeks–40 months). Among 75 reports, 29 (38.67%), describing burning, gingival hyperplasia, erythema, and vesicles, had oral involvement, while 46 (61.33%) had skin, eye, and systemic involvement, with erythema, papules, conjunctival hyperemia, and vertigo. Positive allergy tests concomitant with the manifestations identified nickel 451 times, cobalt 6 times, titanium 5 times, and chromium 4 times. Management included antihistamines or corticosteroids and removing the offending materials, with treatment discontinuation/appliance substitution. Conclusions: Pre-treatment evaluations, including patient histories and allergy testing, are essential to identify potential allergens and select hypoallergenic materials like titanium or ceramic brackets; regular monitoring and early intervention during treatment are crucial to prevent severe outcomes. Full article
(This article belongs to the Special Issue Oral Health and Dental Care: Current Advances and Future Options)
Show Figures

Figure 1

21 pages, 1018 KiB  
Review
Efficacy of Maxillary Expansion with Clear Aligner in the Mixed Dentition: A Systematic Review
by Luca Levrini, Piero Antonio Zecca, Marina Borgese, Eleonora Ivonne Scurati, Alessandro Deppieri, Stefano Saran, Margherita Caccia and Andrea Carganico
Appl. Sci. 2025, 15(13), 7233; https://doi.org/10.3390/app15137233 - 27 Jun 2025
Viewed by 441
Abstract
The purpose of this systematic review is to analyze the dentoalveolar changes resulting from the use of clear aligners in the treatment of transverse maxillary deficiency among growing children in the mixed dentition stage. An electronic literature search was carried out using the [...] Read more.
The purpose of this systematic review is to analyze the dentoalveolar changes resulting from the use of clear aligners in the treatment of transverse maxillary deficiency among growing children in the mixed dentition stage. An electronic literature search was carried out using the following databases: PubMed, Scopus, Cochrane Library, Embase, and Web of Science. The review protocol was prospectively registered in the PROSPERO database. Eligible studies included children aged 6 to 12 years in the mixed dentition period, presenting with erupted maxillary first molars and a transverse deficiency of the maxilla, and undergoing treatment with Invisalign® First aligners. The review encompassed various study types including retrospective and prospective designs, randomized controlled trials, preliminary studies, and case series. Two independent reviewers conducted the data extraction process. The quality of evidence was assessed using the GRADE approach. Except for studies by Bruni et al., the risk of bias in selected articles was visually summarized in a traffic light plot using the robvis tool, following the ROBINS-I methodology. For the studies by Bruni et al., a separate visual representation was created using robvis with the RoB2 evaluation framework, prepared by the authors S.E.I. and C.A. In total, 14 studies were included in the final synthesis, selected from 265 records retrieved through electronic searches and an additional 36 identified via manual screening. Several parameters were considered in order to assess dentoalveolar expansion: intercanine width, intercanine transpalatal width, intercanine dentoalveolar width, first and second interdeciduous molar width, first and second interpremolar width, first and second interdeciduous molar transpalatal width, first intermolar width, first intermolar mesial, distal, and transpalatal width, molar inclination, arch depth, and arch perimeter, and intermolar dentoalveolar width. An improvement was recorded in all parameters. The studies comparing treatment with Invisalign® First clear aligners and rapid maxillary expander highlighted that these both determined statistically significant differences compared to the natural growth group. Treatment with Invisalign® First in mixed dentition proved to be very effective for dentoalveolar expansion of the maxillary arch, with good control of the crown angulation of the upper first molar and an increase in the palatal area similar to RME, compared to pre-treatment or to the natural growth group. It could represent an effective and comfortable alternative to the traditional rapid maxillary expander treatment. However, further high-quality studies are required to support our current observations and verifying the stability of treatment outcomes on a long-term basis. Full article
Show Figures

Figure 1

18 pages, 794 KiB  
Review
Scoping Review—The Effectiveness of Clear Aligners in the Management of Anterior Open Bite in Adult Patients
by Nicolae Daniel Olteanu, Cristian Romanec, Eduard Radu Cernei, Nikolaos Karvelas, Livia Nastri and Irina Nicoleta Zetu
Medicina 2025, 61(6), 1113; https://doi.org/10.3390/medicina61061113 - 19 Jun 2025
Viewed by 1174
Abstract
Background and Objectives: Anterior open-bite malocclusion remains a challenging orthodontic condition where achieving a positive overbite necessitates precise control of incisor extrusion and molar intrusion. With recent advances in clear aligner therapy—improved materials, attachment techniques and digital treatment planning—the potential for non-invasive [...] Read more.
Background and Objectives: Anterior open-bite malocclusion remains a challenging orthodontic condition where achieving a positive overbite necessitates precise control of incisor extrusion and molar intrusion. With recent advances in clear aligner therapy—improved materials, attachment techniques and digital treatment planning—the potential for non-invasive treatment has increased. This scoping review systematically maps the evidence on the efficacy of clear aligners in treating anterior open bite among adult patients, outlines treatment protocols and highlights gaps in the literature. Materials and Methods: A systematic search was conducted in PubMed/Medline, Embase/ScienceDirect and Clarivate/Web of Science for literature published in English between January 2000 and December 2024. Studies involving adult patients treated with clear aligners (predominantly Invisalign®) were included. A two-step screening process was applied, and data were charted according to pre-specified criteria. The review adheres to the PRISMA-ScR checklist guidelines. Results: From an initial pool of 802 articles, 30 met the inclusion criteria following duplicate removal and full-text screening. The evidence suggests that clear aligners can achieve measurable incisor extrusion and posterior intrusion when appropriate auxiliary techniques (e.g., attachments and mini screws) are used. However, digital treatment planning software may overestimate movement predictions, necessitating iterative refinement phases. Patient compliance, clinician expertise and technological limitations are key factors influencing outcomes. Conclusions: Clear aligner therapy represents a promising alternative to fixed appliances for anterior open-bite correction in adults, although challenges remain in achieving precise vertical control. Further high-quality randomized controlled trials and standardized outcome measures are needed to confirm long-term stability and efficacy. Full article
(This article belongs to the Special Issue Recent Advances in Orthodontics and Dental Medicine)
Show Figures

Figure 1

34 pages, 18712 KiB  
Article
Statistical Computation of Hjorth Competing Risks Using Binomial Removals in Adaptive Progressive Type II Censoring
by Refah Alotaibi, Mazen Nassar and Ahmed Elshahhat
Mathematics 2025, 13(12), 2010; https://doi.org/10.3390/math13122010 - 18 Jun 2025
Viewed by 245
Abstract
In complex reliability applications, it is common for the failure of an individual or an item to be attributed to multiple causes known as competing risks. This paper explores the estimation of the Hjorth competing risks model based on an adaptive progressive Type [...] Read more.
In complex reliability applications, it is common for the failure of an individual or an item to be attributed to multiple causes known as competing risks. This paper explores the estimation of the Hjorth competing risks model based on an adaptive progressive Type II censoring scheme via a binomial removal mechanism. For parameter and reliability metric estimation, both frequentist and Bayesian methodologies are developed. Maximum likelihood estimates for the Hjorth parameters are computed numerically due to their intricate form, while the binomial removal parameter is derived explicitly. Confidence intervals are constructed using asymptotic approximations. Within the Bayesian paradigm, gamma priors are assigned to the Hjorth parameters and a beta prior for the binomial parameter, facilitating posterior analysis. Markov Chain Monte Carlo techniques yield Bayesian estimates and credible intervals for parameters and reliability measures. The performance of the proposed methods is compared using Monte Carlo simulations. Finally, to illustrate the practical applicability of the proposed methodology, two real-world competing risk data sets are analyzed: one representing the breaking strength of jute fibers and the other representing the failure modes of electrical appliances. Full article
(This article belongs to the Special Issue Statistical Simulation and Computation: 3rd Edition)
Show Figures

Figure 1

12 pages, 679 KiB  
Article
Comparative Assessment of Halitosis and Oral Health-Related Quality of Life Among Children and Young Adults with Clear Aligners, Those with Lingual Orthodontics, and Non-Orthodontic Controls: A Cross-Sectional Study with Dietary Subgroup Analyses
by Hamsah Musa, Dana-Cristina Bratu, Ioana Georgiana Pașca, Malina Popa, Magda Mihaela Luca, Octavia Balean, Ramona Dumitrescu, Ruxadra Sava Rosianu, Atena Galuscan and Roxana Oancea
J. Clin. Med. 2025, 14(11), 3995; https://doi.org/10.3390/jcm14113995 - 5 Jun 2025
Viewed by 517
Abstract
Background and Objectives: Halitosis poses a clinical and psychosocial burden, particularly in orthodontic contexts where plaque retention can exacerbate odor production. This cross-sectional study aimed to compare halitosis and oral health-related quality of life (OHRQoL) in three distinct groups: patients wearing removable clear [...] Read more.
Background and Objectives: Halitosis poses a clinical and psychosocial burden, particularly in orthodontic contexts where plaque retention can exacerbate odor production. This cross-sectional study aimed to compare halitosis and oral health-related quality of life (OHRQoL) in three distinct groups: patients wearing removable clear aligners, patients with lingual orthodontic brackets, and non-orthodontic controls. We further explored dietary factors (frequent snacking vs. infrequent snacking) to identify their influence on halitosis severity and self-perceived well-being. Methods: A total of 162 participants (55 aligners, 58 lingual brackets, 49 controls) were recruited. Halitosis was assessed by the Halitosis Associated Life-Quality Test (HALT) questionnaire (range 0–100) and an organoleptic evaluation (range 0–5). OHRQoL was examined with the OHIP-14 instrument (range 0–56). Data on frequent vs. infrequent snacking were also recorded. One-way ANOVAs with Tukey’s post hoc and chi-square tests were utilized for group comparisons. Spearman’s correlation examined relationships between HALT scores, organoleptic measures, and OHIP-14. A significance threshold of p < 0.05 was adopted. Results: Aligner users demonstrated lower mean HALT scores (31.7 ± 5.8) compared to the lingual group (37.4 ± 6.2, p = 0.001) and controls (34.6 ± 6.0, p = 0.039). Lingual bracket wearers had the highest mean organoleptic score (2.4 ± 0.6, p < 0.001). Frequent snackers exhibited worse HALT outcomes (36.9 ± 6.3) than infrequent snackers (32.6 ± 5.9, p = 0.005). A correlation analysis showed a moderate positive correlation (r = +0.52, p < 0.001) between HALT and organoleptic scores and a strong negative relationship (r = –0.63, p < 0.001) between HALT and OHIP-14. Conclusions: Removable aligner use correlated with lower self-reported halitosis and better OHRQoL relative to lingual brackets. Frequent snacking appeared to aggravate halitosis across all groups. These findings emphasize the importance of tailored oral hygiene measures, dietary counseling, and orthodontic appliance selection to mitigate halitosis and enhance overall well-being. Full article
(This article belongs to the Section Dentistry, Oral Surgery and Oral Medicine)
Show Figures

Figure 1

12 pages, 774 KiB  
Article
Comparative Analysis of Halitosis in Adolescents and Young Adults with Removable Retainers, Fixed Retainers, or No Orthodontic Treatment: A Cross-Sectional Study with Salivary pH Subgroup Analyses
by Magda Mihaela Luca, Roxana Buzatu and Bogdan Andrei Bumbu
J. Clin. Med. 2025, 14(10), 3560; https://doi.org/10.3390/jcm14103560 - 19 May 2025
Viewed by 539
Abstract
Background and Objectives: Halitosis is a persistent oral health issue that can undermine self-esteem and social interactions, particularly in younger populations who may be more vulnerable to peer judgment. Orthodontic retainers—both removable and fixed—can alter oral microbiota and salivary parameters, potentially influencing [...] Read more.
Background and Objectives: Halitosis is a persistent oral health issue that can undermine self-esteem and social interactions, particularly in younger populations who may be more vulnerable to peer judgment. Orthodontic retainers—both removable and fixed—can alter oral microbiota and salivary parameters, potentially influencing malodor development. This study aimed to compare halitosis severity and oral-health-related quality of life (OHRQoL) in adolescents and young adults (aged 12–25) wearing removable retainers, fixed retainers, or no orthodontic appliances, with an additional focus on salivary pH as a possible modifying factor. Methods: A total of 88 participants were allocated into three groups: removable retainer (n = 28), fixed retainer (n = 30), and no orthodontic treatment (n = 30). Halitosis severity was measured via organoleptic evaluation (0–5 scale) and the Halitosis Associated Life-Quality Test (HALT, 0–100). Salivary pH was determined using a digital pH meter. OHRQoL was assessed through the Oral Health Impact Profile–14 (OHIP-14, 0–56). One-way ANOVA with Tukey’s post hoc test and chi-square analyses were employed to compare outcomes among groups. Spearman’s correlation explored relationships among HALT, organoleptic scores, OHIP-14, and salivary pH. Results: Fixed retainer wearers exhibited higher mean organoleptic scores (2.2 ± 0.6) compared to removable retainer users (1.7 ± 0.5, p = 0.003). HALT results similarly showed that the fixed retainer group (35.6 ± 6.4) reported more halitosis-related burdens than the removable group (31.4 ± 5.9, p = 0.015). Low salivary pH (<6.8) was linked to greater malodor indices in all cohorts (p < 0.05). Correlations revealed moderate positive associations between HALT and OHIP-14 (r = +0.52, p < 0.001). Conclusions: Adolescents and young adults wearing fixed orthodontic retainers reported more severe halitosis and a correspondingly lower oral-health-related quality of life than those with removable retainers or no orthodontic appliances. Salivary pH emerged as an influential factor, indicating that maintaining a neutral oral environment could mitigate malodor. Targeted interventions emphasizing hygiene and saliva management may improve overall well-being in this vulnerable age group. Full article
(This article belongs to the Section Dentistry, Oral Surgery and Oral Medicine)
Show Figures

Figure 1

13 pages, 3003 KiB  
Article
Extraction-Based Pretreatment of End-of-Life Plastics from Waste Electrical and Electronic Equipment for Brominated Flame Retardant Removal and Subsequent Valorization via Pyrolysis
by Maria-Anna Charitopoulou, Maria Papadimitriou, Lambrini Papadopoulou and Dimitriοs S. Achilias
Processes 2025, 13(5), 1458; https://doi.org/10.3390/pr13051458 - 9 May 2025
Viewed by 557
Abstract
Due to the increasing volumes of plastic waste generated from electric and electronic devices, research has focused on the investigation of recycling methods for their safe handling. Pyrolysis converts plastics from waste electric and electronic equipment (WEEE) into valuable products (pyrolysis oil). Nevertheless, [...] Read more.
Due to the increasing volumes of plastic waste generated from electric and electronic devices, research has focused on the investigation of recycling methods for their safe handling. Pyrolysis converts plastics from waste electric and electronic equipment (WEEE) into valuable products (pyrolysis oil). Nevertheless, the frequent presence of flame retardants, mainly brominated flame retardants (BFR), hinders pyrolysis’s wide application, since hazardous compounds may be produced, limiting the use of pyrolysis oils. Taking the aforementioned into account, this work focuses on the recycling, via pyrolysis, of various plastic samples gathered from WEEE, to explore the valuable products that are formed. Specifically, 14 plastic samples were collected, including parts of computer peripheral equipment, remote controls, telephones and other household appliances. Considering the difficulties when BFRs are present, the study went one step further, applying XRF analysis to identify their possible presence, and then Soxhlet extraction as an environmentally friendly method for the debromination of the samples. Based on the XRF results, it was found that 23% of the samples contained bromine. After each Soxhlet extraction, bromine was reduced, achieving a complete removal in the case of a remote control sample and when butanol was the solvent. Thermal pyrolysis led to the formation of valuable products, including the monomer styrene and other secondary useful compounds, such as alpha-methylstyrene. The FTIR results, in combination with the pyrolysis products, enabled the identification of the polymers present in the samples. Most of them were ABS or HIPS, while only three samples were PC. Full article
(This article belongs to the Special Issue Municipal Solid Waste for Energy Production and Resource Recovery)
Show Figures

Graphical abstract

17 pages, 381 KiB  
Systematic Review
Biofilm Composition Changes During Orthodontic Clear Aligners Compared to Multibracket Appliances: A Systematic Review
by Alba Belanche Monterde, Javier Flores-Fraile, Esteban Pérez Pevida and Álvaro Zubizarreta-Macho
Microorganisms 2025, 13(5), 1039; https://doi.org/10.3390/microorganisms13051039 - 30 Apr 2025
Viewed by 861
Abstract
Clear aligner treatment seems to be a good option for the periodontal patient by the reason of being removable. Multibracket appliances are more difficult to mantain clean and some bacteria might prefer to adhere on the archwire. A systematic review was carried out [...] Read more.
Clear aligner treatment seems to be a good option for the periodontal patient by the reason of being removable. Multibracket appliances are more difficult to mantain clean and some bacteria might prefer to adhere on the archwire. A systematic review was carried out using 4 electronic databases (Pubmed-Medline, Scopus, Cochrane and Web of Science). The selected trials included quantitative (Shannon index, Simpson index, relative abundances) and/or qualitative (alpha and beta diversity) analysis in patients using clear aligners and multibracket appliances. Initially, a total of 123 articles were found after selecting clinical trials. The inclusion and exclusion criteria were applied by two authors. Finally, 20 articles were selected for the systematic review. The results showed that clear aligner treatment produced less dysbiosis in the selected bacteria compared to multibracket appliances. However, some microbiological changes were observed in some articles during clear aligner use. Oral dysibiosis was related with intestinal dysbiosis, inflammatory response and even cancer. The Firmicutes/Bacteroidetes ratio showed to have a very important role in this development. Periodontitis is also a bacterial disease and clear aligners were recommended to periodontal risk patients. Clear aligner treatment obtained less supra and subgingival biofilm changes compared with multibracket appliances but some bacteria were altered during treatment. Full article
Show Figures

Figure 1

13 pages, 960 KiB  
Article
Halitosis and Quality of Life in Young Orthodontic Patients: A Cross-Sectional Assessment of Mouthwash Use and Traditional, Rotative, and Sonic Toothbrushes
by Hamsah Musa, Ioana Georgiana Pașca, Malina Popa, Octavia Bălean, Ramona Dumitrescu, Ruxadra Sava Roșianu, Atena Gălușcan and Roxana Oancea
Medicina 2025, 61(5), 815; https://doi.org/10.3390/medicina61050815 - 28 Apr 2025
Cited by 1 | Viewed by 682
Abstract
Background and Objectives: Halitosis is common among orthodontic patients, potentially exacerbated by plaque retention around brackets. It was hypothesized that patients using sonic toothbrushes would report lower halitosis impact scores compared to those using traditional or rotative toothbrushes. This study aimed to [...] Read more.
Background and Objectives: Halitosis is common among orthodontic patients, potentially exacerbated by plaque retention around brackets. It was hypothesized that patients using sonic toothbrushes would report lower halitosis impact scores compared to those using traditional or rotative toothbrushes. This study aimed to compare the Halitosis-Associated Life Quality Test (HALT) and Short Form (SF-36) domains among different toothbrush users and to evaluate mouthwash subgroups and “during” vs. “after” appliance removal. Methods: Based on a power calculation (effect size f = 0.30, α = 0.05, 1 − β = 0.80), 174 patients were required. A total of 174 orthodontic patients (57 traditional, 64 rotative, and 53 sonic; mean age 18.0 ± 1.5 years) completed the Halitosis-Associated Life Quality Test (HALT), SF-36, and organoleptic assessments. Results: Sonic toothbrush users reported significantly lower HALT scores (34.8 ± 5.8) vs. rotative (38.1 ± 6.0) and traditional (42.7 ± 6.2) toothbrush users. Spearman’s correlation (r = −0.49 to +0.54) demonstrated that sonic brushing had a moderate negative relationship with halitosis scores, indicating lower malodor for this technique. Patients using chlorhexidine-based mouthwash had the most favorable HALT (34.3 ± 5.7) and organoleptic (1.5 ± 0.4) scores. Those who completed orthodontic treatment showed better outcomes than active treatment patients. Conclusions: Optimized plaque control with sonic brushing and chlorhexidine-based mouthwash correlates with reduced halitosis and improved quality of life during orthodontic treatment. Full article
(This article belongs to the Section Dentistry and Oral Health)
Show Figures

Figure 1

28 pages, 1104 KiB  
Systematic Review
Orthodontic Ceramic Bracket Removal Using Lasers: A Systematic Review
by Mateusz Michalak, Sylwia Kiryk, Agnieszka Kotela, Kamila Wiśniewska, Jan Kiryk, Jacek Zbigniew Zborowski, Jacek Matys and Maciej Dobrzyński
J. Funct. Biomater. 2025, 16(4), 123; https://doi.org/10.3390/jfb16040123 - 1 Apr 2025
Cited by 1 | Viewed by 985
Abstract
Objective: The aim of this systematic review was to evaluate the effectiveness and safety of various laser systems for debonding ceramic orthodontic brackets compared to conventional mechanical removal methods. The primary outcomes assessed included enamel damage, pulp temperature changes, adhesive remnant index (ARI), [...] Read more.
Objective: The aim of this systematic review was to evaluate the effectiveness and safety of various laser systems for debonding ceramic orthodontic brackets compared to conventional mechanical removal methods. The primary outcomes assessed included enamel damage, pulp temperature changes, adhesive remnant index (ARI), and shear bond strength (SBS). Materials and Methods: A systematic search was conducted in November 2024 across the PubMed, Scopus, and Web of Science (WoS) databases following PRISMA guidelines. The initial search yielded 453 records, of which 41 studies met the inclusion criteria for qualitative and quantitative analysis. The risk of bias was assessed using a standardized scoring system, and only studies with accessible full texts were included. Results: The review highlighted significant heterogeneity in laser parameters, measurement protocols, and study methodologies. Among the evaluated lasers, CO2 and Er:YAG were the most frequently studied and demonstrated high efficacy in debonding ceramic brackets while maintaining enamel integrity. Sixteen studies assessing SBS reported a reduction from baseline values of 13–23 MPa to clinically acceptable ranges of 7–12 MPa following laser application. ARI was analyzed in 25 studies, with laser-treated groups exhibiting higher scores (2–3), indicating safer debonding with more adhesive remaining on the tooth surface, thereby reducing enamel damage. Pulpal temperature increases were examined in 23 studies, revealing that most laser types, when used within optimal parameters, did not exceed the 5.5 °C threshold considered safe for pulpal health. However, diode and Tm:YAP lasers showed potential risks of overheating in some studies. Conclusions: Laser-assisted debonding of ceramic orthodontic brackets is an effective and safe technique when applied with appropriate laser parameters. CO2 and Er:YAG lasers were the most effective in reducing SBS while preserving enamel integrity. However, variations in laser settings, study methodologies, and the predominance of in vitro studies limit the ability to establish standardized clinical guidelines. Further randomized controlled trials (RCTs) are necessary to develop evidence-based protocols for safe and efficient laser-assisted bracket removal in orthodontic practice. Full article
(This article belongs to the Special Issue New Trends in Biomaterials and Implants for Dentistry (2nd Edition))
Show Figures

Figure 1

16 pages, 20137 KiB  
Article
Pediatric Treatment of Anterior-Upper-Single Dental Crossbite Using a Versatile Sagittal Screw System: A Case Series
by Antonino Lo Giudice and Alessandro Polizzi
Pediatr. Rep. 2025, 17(1), 11; https://doi.org/10.3390/pediatric17010011 - 21 Jan 2025
Cited by 1 | Viewed by 2847
Abstract
Background/Objectives: Anterior crossbite is characterized by a reverse sagittal relationship between the maxillary and mandibular incisors. Early treatment of an anterior crossbite is advocated to avoid periodontal and traumatic consequences on lower dentition along with growth disturbances in the anterior maxilla and mandible. [...] Read more.
Background/Objectives: Anterior crossbite is characterized by a reverse sagittal relationship between the maxillary and mandibular incisors. Early treatment of an anterior crossbite is advocated to avoid periodontal and traumatic consequences on lower dentition along with growth disturbances in the anterior maxilla and mandible. The present case series describes the usage of a sagittal expansion screw integrated with a removable maxillary plate or fixed appliance to correct an anterior upper single dental crossbite and outlines the clinical rationale and the protocol associated with this appliance system. Methods: A total of four children presenting anterior crossbite were treated using a sagittal expansion screw integrated into a removable plate or a fixed appliance. Results: All patients were successfully treated in less than 4 months. Overjet and overbite were normalized by the end of treatment. The orthodontic treatment received positive feedback from parents and caregivers, who seek a rapid improvement in their children’s aesthetics and function. No significant discomfort or speech difficulties were reported by the parents or patients. Conclusions: The present case series would suggest that a sagittal expansion screw, integrated into both a removable and fixed appliance, can represent a valuable and versatile treatment option for correcting an anterior crossbite. Full article
Show Figures

Figure 1

17 pages, 830 KiB  
Systematic Review
Laser Applications in Metal Orthodontic Bracket Debonding: A Systematic Review
by Patryk Woś, Sylwia Kiryk, Tomasz Dyl, Jan Kiryk, Tomasz Horodniczy, Magdalena Szablińska, Magdalena Aleksandra Dubowik, Wojciech Dobrzyński, Marcin Mikulewicz, Jacek Matys and Maciej Dobrzyński
Appl. Sci. 2025, 15(2), 927; https://doi.org/10.3390/app15020927 - 18 Jan 2025
Cited by 2 | Viewed by 3290
Abstract
Objective: The aim of this systematic review was to evaluate the effectiveness and safety of various laser wavelengths for debonding orthodontic metal brackets compared to traditional plier-based methods. The primary outcomes assessed were enamel damage, pulp temperature changes, adhesive remnant index (ARI), and [...] Read more.
Objective: The aim of this systematic review was to evaluate the effectiveness and safety of various laser wavelengths for debonding orthodontic metal brackets compared to traditional plier-based methods. The primary outcomes assessed were enamel damage, pulp temperature changes, adhesive remnant index (ARI), and shear bond strength (SBS). Materials and Methods: In September 2024, an electronic search was performed across the PubMed, Web of Science (WoS), and Scopus databases, adhering to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines and the PICO framework. The initial search yielded 453 records. After eliminating 256 duplicates, 197 unique records were left for screening, which ultimately led to the qualification of 8 articles that met the inclusion criteria for both qualitative and quantitative analyses. The risk of bias in the articles was assessed by two independent reviewers. Results: The included studies demonstrated that laser-assisted debonding generally resulted in less adhesive residue on the enamel surface compared to conventional methods, as evidenced by the reductions in ARI scores reported in two studies. Temperature increases during laser use varied depending on the laser type and power settings. The Nd:YAG (neodymium-yttrium, aluminum, garnet) laser was found to cause significant temperature rises, posing a potential risk to pulp tissue, while the Er:YAG (erbium—yttrium, aluminum, garnet) and Er,Cr:YSGG (erbium, chromium—yttrium, scandium, gallium, garnet) lasers produced only negligible increases in pulp temperature. SBS comparisons revealed no significant differences between the laser-assisted and traditional debonding methods. Additionally, diode lasers demonstrated the potential to minimize enamel damage, particularly when operated at lower power settings. Four publications were assessed as high quality (low risk of bias), and another four as moderate quality (average risk of bias). Conclusions: In conclusion, laser-assisted orthodontic metal bracket debonding, when conducted with appropriately calibrated parameters, is a safe method for preserving tooth tissue. However, its advantages appear to be minimal compared to conventional plier-based methods, highlighting the need for further research to justify its broader clinical application. Full article
Show Figures

Figure 1

17 pages, 5413 KiB  
Article
Compositional Changes of Volatile Organic Compounds in Biogases and Biomethanes Depending on the Feedstock in Sweden
by Karine Arrhenius and Sandra Hultmark
Gases 2025, 5(1), 3; https://doi.org/10.3390/gases5010003 - 12 Jan 2025
Cited by 1 | Viewed by 1721
Abstract
Biogas usually contains volatile organic compounds such as terpenes, siloxanes, halogenated hydrocarbons, ketones, alcohols, furans and esters whose presence in the biogas is highly dependent on the feedstock. These trace components can affect the integrity of the materials they come into contact with, [...] Read more.
Biogas usually contains volatile organic compounds such as terpenes, siloxanes, halogenated hydrocarbons, ketones, alcohols, furans and esters whose presence in the biogas is highly dependent on the feedstock. These trace components can affect the integrity of the materials they come into contact with, e.g., equipment, pipelines and engines, and their presence in the gas may pose health, safety and environmental risks. Understanding the composition of gases is a prerequisite to ensure the correct function of gas infrastructure, appliances and vehicles. This study examined how volatile organic compound (VOC) content in biogas varies depending on the feedstock and evaluated the efficiency of different upgrading processes in removing VOCs. The data, primarily collected in Sweden, include biogases produced in digesters and landfills. The selection of VOCs included in this study was based on extensive analysis of samples collected from numerous biogas and biomethane industrial facilities over an extended period, providing a comprehensive overview of VOC composition. The conducted research is intended to serve as a basis for more systematic studies on the influence of process parameters and feedstock composition on the formation of VOCs. The data have multiple potential uses, including predicting which VOCs would be found in biomethane for a given feedstock and upgrading techniques. Additionally, these data can also be used in standardization discussions to assess the plausibility of the proposed limit values and the need to regulate additional compounds. Full article
Show Figures

Figure 1

11 pages, 265 KiB  
Systematic Review
Changes in the Oral Microbiota with the Use of Aligners vs. Braces: A Systematic Review
by Pilar España-Pamplona, Laura Bernés-Martínez, Carolina Andrés-Castelló, Belén Bolás-Colveé, Milagros Adobes-Martín and Daniele Garcovich
J. Clin. Med. 2024, 13(23), 7435; https://doi.org/10.3390/jcm13237435 - 6 Dec 2024
Cited by 3 | Viewed by 1933
Abstract
Background: Orthodontic treatments have evolved significantly, with clear aligners becoming increasingly popular due to their aesthetic appeal and ease of use. This study systematically reviewed the impact of clear aligners in the changes in the oral microbiota compared to traditional fixed appliances. Methods: [...] Read more.
Background: Orthodontic treatments have evolved significantly, with clear aligners becoming increasingly popular due to their aesthetic appeal and ease of use. This study systematically reviewed the impact of clear aligners in the changes in the oral microbiota compared to traditional fixed appliances. Methods: Following PRISMA guidelines, a systematic review was conducted using two databases such as Scopus, Web of Science, and the PubMed search engine. The studies included were those published between 2010 and 2023, involving adults over 18 years using clear aligners and fixed appliances. The data on oral microbiota changes were extracted and analyzed. Results: The review included eight studies, highlighting the differences in microbial changes associated with clear aligners versus fixed appliances. Clear aligners were associated with fewer detrimental changes in the oral microbiota, potentially due to their removable nature allowing for better hygiene. Fixed appliances showed a tendency to harbor more pathogenic bacteria, which is likely due to their difficulty to clean. Conclusions: Clear aligners may offer a better alternative to fixed appliances in terms of maintaining a healthier oral microbiota. Their design and ease of hygiene contribute to less accumulation of pathogenic bacteria, showing a more positive impact on maintaining a balanced oral microbiota when compared to fixed appliances. Full article
(This article belongs to the Section Dentistry, Oral Surgery and Oral Medicine)
Back to TopTop