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Open AccessArticle

Ratio between Height and Thickness of the Buccal Tissues: A Pilot Study on 32 Single Implants

1
School of Medicine and Surgery, University of Insubria, Via G. Piatti 10, 21100 Varese, Italy
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C.so Europa 10, 20122 Milan, Italy
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Department of Prevention and Communal Dentistry, Sechenov First Moscow State Medical University, 119992 Moscow, Russia
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V.le Luigi Borri 133, 2100 Varese, Italy
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Department of Orthodontics, School of Dentistry, University of Milan, Via Commenda 10, 20154 Milan, Italy
*
Author to whom correspondence should be addressed.
Dent. J. 2019, 7(2), 40; https://doi.org/10.3390/dj7020040
Received: 12 February 2019 / Revised: 29 March 2019 / Accepted: 30 March 2019 / Published: 2 April 2019
(This article belongs to the Special Issue Osseointegration of Dental Implants)
Background: Previous studies have suggested that mucosal height is related to the bone level and soft tissue thickness. The purpose of this pilot study was to investigate the ratio between the height and width of the tissues around single implants with a conical connection and platform switching. Methods: All patients receiving single implants (Anyridge®, MegaGen, Gyeongbuk, South Korea) and restored with single crowns, in a three-month period, were included in this study. After a provisionalization of 12 months, precision impressions were taken and stone casts were poured for measurements. For each implant, two values were collected at the buccal site: the mucosal height (MH), calculated from the vestibular shoulder of the implant to the upper gingival margin of the supra-implant tissue; and the mucosal thickness (MT), calculated from the vestibular shoulder of the analogue to the external mucosa point perpendicular to the implant major axis. Mean, standard deviation (SD), and confidence intervals (CI 95%) for MH and MT, as well as their ratios, were calculated. Correlation between MH and MT was assessed by Pearson’s correlation coefficient, with significance level set at 0.05. Results: 32 single Anyridge® implants were eligible for this evaluation. The mean MH was 3.44 mm (±1.28), the mean MT was 3.29 (±1.46). The average of the ratio between MH and MT of the supra-implant mucosa was therefore 1:1.19 (±0.55). The relation between MH and MT was statistically significant at p ≤ 0.01 (Pearson two-tailed 95% CI). Conclusions: Our study found a constant relationship between width and height of the peri-implant mucosa. However, our results are different from those of Nozawa et al., who found a ratio of 1:1.5 between height and thickness of the peri-implant tissues. This may be determined by the different sample and follow-up period, as well as by the implants used in our study. View Full-Text
Keywords: implants; aesthetics; tissue height; tissue thickness; conical implant–abutment connection; platform switching; success implants; aesthetics; tissue height; tissue thickness; conical implant–abutment connection; platform switching; success
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Farronato, D.; Manfredini, M.; Mangano, F.; Goffredo, G.; Colombo, M.; Pasini, P.; Orsina, A.; Farronato, M. Ratio between Height and Thickness of the Buccal Tissues: A Pilot Study on 32 Single Implants. Dent. J. 2019, 7, 40.

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