Evidence analysis shows that the present knowledge about biologic width around implants is mainly derived from animal studies and that clinical controlled human studies are insufficient
PURPOSE The concept of biologic width forms a basis for successful peri-implant soft tissue integration around titanium implants .
Therefore , the objectives of this review are to determine and critically evaluate the present knowledge about biologic width around implants and to establish future research trends .
Comparative study between the effects of photodynamic therapy and conventional therapy on microbial reduction in ligature-induced peri-implantitis in dogs.
BACKGROUND Progressive peri-implant bone losses , which are accompanied by inflammatory lesions in the soft tissues , are referred to as peri-implantitis . The aim of this study was to compare the effects of photodynamic therapy ( PDT ) and conventional technique on microbial reduction in ligature-induced peri-implantitis in dogs . METHODS Eighteen third premolars from nine Labrador retriever dogs were extracted and the implants were submerged . After osseointegration , peri-implantitis was induced . After 4 months , ligature was removed and natural bacterial plaque was allowed to form for another 4 months . The animals were then r and omly divided into two groups . In the conventional group , they were treated using mucoperiosteal flaps for scaling the implant surface and chlorexidine ( conventional ) irrigation . In the PDT group , only mucoperiosteal scaling was carried out before photodynamic therapy . Inside the peri-implant pocket , a paste-based azulene photosensitizer was placed and then a GaAlAs low-power laser ( lambda=660 nm , P=40 mW , E=7.2 J for 3 minutes ) was used . Microbiological sample s were obtained before and immediately after treatment . Before treatment , one implant was removed and analyzed by scanning electron microscopy to vali date the contamination . RESULTS The results of this study showed that Prevotella sp. , Fusobacterium sp. , and S. Beta-haemolyticus were significantly reduced for both groups . After treatment , no significant differences were observed between the groups . CONCLUSION These findings suggest that photodynamic therapy is a non-invasive method that could be used to reduce microorganisms in peri-implantitis
Evidence analysis shows that the present knowledge about biologic width around implants is mainly derived from animal studies and that clinical controlled human studies are insufficient
PURPOSE The concept of biologic width forms a basis for successful peri-implant soft tissue integration around titanium implants .
Therefore , the objectives of this review are to determine and critically evaluate the present knowledge about biologic width around implants and to establish future research trends .