OBJECTIVES: To investigate the influence of platform switching on crestal bone level changes at non-submerged titanium implants over a period of 6 months. MATERIAL AND METHODS: Titanium implants (n=72) were placed at 0.4 mm above the alveolar crest in the lower jaws of 12 dogs and randomly assigned to either matching or non-matching (circumferential horizontal mismatch of 0.3 mm) healing abutments. At 4, 8, 12, and 24 weeks, dissected blocks were processed for histomorphometrical analysis. Measurements were made between the implant shoulder (IS) and the apical extension of the long junctional epithelium (aJE), the most coronal level of bone in contact with the implant (CLB), and the level of the alveolar bone crest (BC). RESULTS: At 24 weeks, differences in the mean IS-aJE, IS-CLB, and IS-BC values were 0.2 +/- 1.2, 0.3 +/- 0.7, and 0.3 +/- 0.8 mm at the buccal aspect, and 0.2 +/- 0.9, 0.3 +/- 0.5, and 0.3 +/- 0.8 mm at the lingual aspect, respectively. Comparisons between groups revealed no significant differences at either the buccal or the lingual aspects. CONCLUSIONS: It was concluded that (i) bone remodelling was minimal in both groups and (ii) platform switching may not be of crucial importance for maintenance of the crestal bone level.
OBJECTIVES: To investigate the influence of platform switching on crestal bone level changes at non-submerged titanium implants over a period of 6 months. MATERIAL AND METHODS: Titanium implants (n=72) were placed at 0.4 mm above the alveolar crest in the lower jaws of 12 dogs and randomly assigned to either matching or non-matching (circumferential horizontal mismatch of 0.3 mm) healing abutments. At 4, 8, 12, and 24 weeks, dissected blocks were processed for histomorphometrical analysis. Measurements were made between the implant shoulder (IS) and the apical extension of the long junctional epithelium (aJE), the most coronal level of bone in contact with the implant (CLB), and the level of the alveolar bone crest (BC). RESULTS: At 24 weeks, differences in the mean IS-aJE, IS-CLB, and IS-BC values were 0.2 +/- 1.2, 0.3 +/- 0.7, and 0.3 +/- 0.8 mm at the buccal aspect, and 0.2 +/- 0.9, 0.3 +/- 0.5, and 0.3 +/- 0.8 mm at the lingual aspect, respectively. Comparisons between groups revealed no significant differences at either the buccal or the lingual aspects. CONCLUSIONS: It was concluded that (i) bone remodelling was minimal in both groups and (ii) platform switching may not be of crucial importance for maintenance of the crestal bone level.
Authors: Javier Sanz-Esporrin; Cristina Carral; Juan Blanco; José V Sanz-Casado; Fernando Muñoz; Mariano Sanz Journal: Clin Oral Investig Date: 2020-11-12 Impact factor: 3.573
Authors: Daniel Rothamel; Maria Heinz; Daniel Ferrari; Alfons Eissing; Henrik Holtmann; Lara Schorn; Tim Fienitz Journal: Int J Implant Dent Date: 2022-07-16
Authors: Yun-Chi Wang; Joseph Y K Kan; Kitichai Rungcharassaeng; Phillip Roe; Jaime L Lozada Journal: Clin Oral Implants Res Date: 2014-01-03 Impact factor: 5.977
Authors: Rocío Alonso-González; Amparo Aloy-Prósper; David Peñarrocha-Oltra; M A Peñarrocha-Diago; M Peñarrocha-Diago Journal: J Clin Exp Dent Date: 2012-07-01