Page 216 - Peri-implant health: the effect of implant design and surgical procedure on bone and soft tissue stability

CHAPTER 9
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of surface or implant brand, suggesting that currently reported peri-
implantitis prevalence is exaggerated.
4. Rough implant systems are more prone to crestal bone loss. However, the
multifactorial cause for bone loss and the heterogeneity of the studies make it difficult to draw firm conclusions. Nevertheless, more papers show less bone loss in favour of minimally rough implant systems.
5. Co-factors such as smoking or a history of periodontal disease increase the risk of bone loss.
6. The implant neck design (microthreaded vs non-microthreaded) has no influence on peri-implant bone remodeling when implants are installed in relation to soft tissue thickness allowing the formation of a 3 to 4 mm biological seal.
7. The implant-abutment connection type (internal vs external) has no influence on peri-implant bone remodeling when implants are installed in relation to soft tissue thickness allowing the formation of a 3 to 4 mm biological seal.
8. Implant surface roughness (minimally rough vs moderately rough) influences peri-implant bone remodeling nor additional bone loss when implants are installed in relation to soft tissue thickness allowing the formation of a 3 to 4 mm biologic seal.
9. Peri-implant health parameters (probing pocket depth, bleeding on probing, and plaque score) are not affected by implant design, surface texture, or abutment-connection features when implants are installed in relation to soft tissue thickness.
10. Anticipating biologic width re-establishment by adapting the vertical position of the implant in relation to the available soft tissue thickness may prevent initial peri-implant bone loss.
11. In a well-maintained population, the effect of early implant surface exposure caused by initial bone remodeling on peri-implant bone stability and biological parameters seems to be limited.
12. Implant-supported mandibular overdentures significantly improve the quality of life, with little biological complications and a high survival rate of the implants.