Abstract:The use of implants as anchorage for orthodontic forces seems to be a good alternative in partially edentulous patients needing orthodontic treatment. This study is aimed at assessing the performance and behavior of microtextured surface endosseous implants obtained by means of a double acid etching against orthodontic forces, as well as their adequacy to be used first as anchorage and later as fixtures for the definitive prosthesis. Materials and Methods: A total of 93 double acid-etched surface parallel wall implants (Osseotite® Implants, Implant Innovations Inc., Palm Beach, Florida, USA) were inserted in 38 partially edentulous patients prior to orthodontic treatment This was carried out by following two-stage surgery protocols in the maxilla as well as in the mandible. After a healing period of six months for the maxilla and four months for the mandible, the implants were used as anchorage for sliding, compression and traction orthodontic forces between 100 to 200 g by means of Ni-TI springs. Bone level and Resonance Frequency Analysis (RFA) were measured before and after the introduction of the orthodontics forces. Results: After removal of the orthodontics appliances, all the implants remained stabile and served as support for prosthetic replacement of missing teeth. The bone level showed no variation even when a positive difference 0.02 ± 0.38mm was noticed. The RFA scored a significant difference (p 0.03) between the initial Implant Stability Quotient (ISQ) values (66) and the final ones (68). Conclusions: These findings showed that Osseotite implants were able to support the orthodontic forces applied during this investigation, maintaining osseointegration without significant variation in bone level. Therefore, they can be used to support dental prosthesis once they have been used as orthodontic anchorage under the cited conditions.

The present article describes the TSC Protocol (tubes, support, connectors) version 2.2 for construction of surgical guides for implant placement and the possibility of insertion of the implants also.

Objective: Quantitatively assess bone density in maxillary sinus lifting with ABB (Bio-Oss®), using Cone-Beam computed tomography 6 months after surgery. Material and methods:A retrospective observational study was conducted between February 2018 and February 2019 on 33 Cone-Beam tomographic studies of 29 adult patients of both genders, with maxillary sinus fl oor lift, using Bio-Oss® small particles ( 0.25-1um), large particles (1-2um) or a 50-50 % mix of both, always using Bio-Gide® membranes, in order to measure bone density through Hounsfi eld Units (UH) after 6 months of healing. Results:The average density of the grafted sinuses was 586 ± 238 HU, corresponding to Type II-III bone. Gender (p = 0.079) and Residual bone (p = 0.681) showed no signifi cant differences, while Age (p = 0.015) and Particles Size (p = 0.002; p <0.05), were signifi cant. The highest tomographic density was obtained in patients older than 65 years; and in mixed particles size grafts. Conclusion:The bone density obtained after maxillary sinus lifting with Bio-Oss shows quantitative values similar to those of type II-III bone, providing a high degree of predictability for implant placement 6 months after the intervention.

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In total 72 Straumann TL implants were placed. In 1st group 1st subgroup regenerated bone volume resulted in 4,6+/-0,7 mm, 2nd subgroup in 4,8+/-0,9 mm. In 2nd group 1st subgroup regenerated bone volume resulted in 4,4+/-0,4 mm, 2nd subgroup in 4,3+/-0,6 mm. The data was not statistically significant. The study was initiated in 2010. After 5 years at radiological (CBCT) evaluation promising results were obtained, and are now being processed.