Alex Solderer1, Benjamin E Pippenger2, Marcel Donnet3, Daniel Wiedemeier4, Liza L Ramenzoni1, Patrick R Schmidlin5. 1. Clinic of Conservative and Preventive Dentistry, Division of Periodontology and Peri-implant Diseases, Center of Dental Medicine, University of Zurich, Plattenstrasse 11, 8032, Zurich, Switzerland. 2. Preclinical & Translational Research Group, Straumann AG, Basel, Switzerland. 3. EMS, Nyon, Switzerland. 4. Statistical Services, Center of Dental Medicine, University of Zurich, Zurich, Switzerland. 5. Clinic of Conservative and Preventive Dentistry, Division of Periodontology and Peri-implant Diseases, Center of Dental Medicine, University of Zurich, Plattenstrasse 11, 8032, Zurich, Switzerland. patrick.schmidlin@zzm.uzh.ch.
Abstract
OBJECTIVES: To evaluate the effectiveness of mechanical debridement and/or air polishing on the healing of ligature-induced buccal periimplantitis dehiscence defects in dogs. MATERIAL AND METHODS: Forty-eight implants were placed in the mandibles of twelve beagle dogs, and periimplantitis was induced for 2 months using ligatures. The resulting buccal dehiscence-type defects were surgically cleaned and augmented (xenogenic filler and resorbable membrane) according to one of the following treatments: (1) Cleaning with carbon curette (debridement - D) and guided bone regeneration (GBR/G): DG, (2) air polishing cleaning (A) and GBR: AG, (3) a combination of D/A/G: DAG, and (4) D/A without GBR: DA. After 2 months, histomorphometric and inflammatory evaluations were conducted. RESULTS: The median bone gain after therapy ranged between 1.2 mm (DG) and 2.7 mm (AG). Relative bone gain was between 39% (DG) and 59% (AG). The lowest inflammation scores were obtained in DA without GBR (5.84), whereas significantly higher values between 8.2 and 9.4 were found in the groups with augmentation. At lingual sites without defects, scores ranged from 4.1 to 5.9. According to ISO, differences above 2.9 were considered representative for irritative properties. CONCLUSIONS: All treatments resulted in partial regeneration of the defects. No treatment group showed a significantly (p < 0.05) better outcome. However, pretreatment with air polishing showed a tendency for less inflammation. Noteworthy, inflammation assessment showed an overall irritative potential after GBR in the evaluated early healing phase. CLINICAL RELEVANCE: Periimplantitis treatment still represents a big issue in daily practice and requires additional preclinical research in order to improve treatment concepts.
OBJECTIVES: To evaluate the effectiveness of mechanical debridement and/or air polishing on the healing of ligature-induced buccal periimplantitis dehiscence defects in dogs. MATERIAL AND METHODS: Forty-eight implants were placed in the mandibles of twelve beagle dogs, and periimplantitis was induced for 2 months using ligatures. The resulting buccal dehiscence-type defects were surgically cleaned and augmented (xenogenic filler and resorbable membrane) according to one of the following treatments: (1) Cleaning with carbon curette (debridement - D) and guided bone regeneration (GBR/G): DG, (2) air polishing cleaning (A) and GBR: AG, (3) a combination of D/A/G: DAG, and (4) D/A without GBR: DA. After 2 months, histomorphometric and inflammatory evaluations were conducted. RESULTS: The median bone gain after therapy ranged between 1.2 mm (DG) and 2.7 mm (AG). Relative bone gain was between 39% (DG) and 59% (AG). The lowest inflammation scores were obtained in DA without GBR (5.84), whereas significantly higher values between 8.2 and 9.4 were found in the groups with augmentation. At lingual sites without defects, scores ranged from 4.1 to 5.9. According to ISO, differences above 2.9 were considered representative for irritative properties. CONCLUSIONS: All treatments resulted in partial regeneration of the defects. No treatment group showed a significantly (p < 0.05) better outcome. However, pretreatment with air polishing showed a tendency for less inflammation. Noteworthy, inflammation assessment showed an overall irritative potential after GBR in the evaluated early healing phase. CLINICAL RELEVANCE: Periimplantitis treatment still represents a big issue in daily practice and requires additional preclinical research in order to improve treatment concepts.
Entities:
Keywords:
Air polishing; Dehiscence defect; Dental implants; Guided bone regeneration; Periimplantitis
Authors: Frank Schwarz; Kathrin Becker; Klaus-Dieter Bastendorf; Daniele Cardaropoli; Christina Chatfield; Ian Dunn; Paul Fletcher; Johannes Einwag; Anna Louropoulou; Andrea Mombelli; Philip Ower; Pedja Pavlovic; Philipp Sahrmann; Giovanni E Salvi; Petra Schmage; Yasuko Takeuchi; Fridus Van Der Weijden; Stefan Renvert Journal: Quintessence Int Date: 2016-04 Impact factor: 1.677
Authors: M B Hürzeler; C R Quiñones; P Schüpback; E C Morrison; R G Caffesse Journal: Int J Oral Maxillofac Implants Date: 1997 Mar-Apr Impact factor: 2.804