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International Journal of Dentistry
Volume 2016, Article ID 9393219, 9 pages
Clinical Study

Soft Tissue Stability around Single Implants Inserted to Replace Maxillary Lateral Incisors: A 3D Evaluation

1Department of Surgical and Morphological Science, Dental School, University of Varese, 21100 Varese, Italy
2Private Practice, 00193 Rome, Italy
3Private Practice, 20154 Milan, Italy
4Department of Health Sciences, University of Eastern Piedmont, 28100 Novara, Italy
5Mir Dental Hospital, 149-132 Samduk 2Ga, Jung-Gu, Daegu 700 412, Republic of Korea
6Department of Dental Sciences, Vita Salute San Raffaele University, 20132 Milan, Italy

Received 16 February 2016; Revised 27 March 2016; Accepted 24 April 2016

Academic Editor: Andreas Stavropoulos

Copyright © 2016 F. G. Mangano et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. To evaluate the soft tissue stability around single implants inserted to replace maxillary lateral incisors, using an innovative 3D method. Methods. We have used reverse-engineering software for the superimposition of 3D surface models of the dentogingival structures, obtained from intraoral scans of the same patients taken at the delivery of the final crown (S1) and 2 years later (S2). The assessment of soft tissues changes was performed via calculation of the Euclidean surface distances between the 3D models, after the superimposition of S2 on S1; colour maps were used for quantification of changes. Results. Twenty patients (8 males, 12 females) were selected, 10 with a failing/nonrestorable lateral incisor (test group: immediate placement in postextraction socket) and 10 with a missing lateral incisor (control group: conventional placement in healed ridge). Each patient received one immediately loaded implant (Anyridge®, Megagen, Gyeongbuk, South Korea). The superimposition of the 3D surface models taken at different times (S2 over S1) revealed a mean (±SD) reduction of 0.057 mm (±0.025) and 0.037 mm (±0.020) for test and control patients, respectively. This difference was not statistically significant (p = 0.069). Conclusions. The superimposition of the 3D surface models revealed an excellent peri-implant soft tissue stability in both groups of patients, with minimal changes registered along time.