Comparison of soft tissue healing around implants in beagle dogs: flap surgery versus flapless surgery. 2013

Qun Lei, and Jiang Chen, and Jianhui Jiang, and Xiaoming Fu, and Hengzhang Lin, and Zhiyu Cai
School of Stomatology, Fujian Medical University, Fuzhou, China.

OBJECTIVE The objective of this study was to compare soft tissue healing after implant placement in flap and flapless surgery in the dog model. METHODS Mandibular premolars were extracted from 10 beagle dogs. The extraction sockets were allowed to heal for 8 weeks. After healing, 3 implants on each side of the mandible were implanted using either flap or flapless techniques. One implant was installed on each side at the 0-, 4-, and 6-week time point. Eight weeks later, the peri-implant soft tissue healing was subjected to clinical and immunohistochemical analysis. RESULTS It was revealed that vascular endothelial growth factor (VEGF) expression, peri-implant crevicular fluid (PICF) volume, and the aspartate aminotransferase and alkaline phosphatase activity in PICF increased significantly in the 2-week flap group compared with the 2-week flapless group. Microvascular density and VEGF expression in the 8-week flap group was statistically significantly lower than the 8-week flapless group and normal group. Buccal gingival recession was less pronounced in the flapless group than in the flap group after 4 and 8 weeks. CONCLUSIONS Within the limits of this study, the results demonstrate that flapless surgery contributes to better esthetic outcomes in implants compared with the flap approach.

UI MeSH Term Description Entries
D008334 Mandible The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth. Mylohyoid Groove,Mylohyoid Ridge,Groove, Mylohyoid,Grooves, Mylohyoid,Mandibles,Mylohyoid Grooves,Mylohyoid Ridges,Ridge, Mylohyoid,Ridges, Mylohyoid
D010519 Periodontium The structures surrounding and supporting the tooth. Periodontium includes the gum (GINGIVA), the alveolar bone (ALVEOLAR PROCESS), the DENTAL CEMENTUM, and the PERIODONTAL LIGAMENT. Paradentium,Parodontium,Tooth Supporting Structures,Paradentiums,Parodontiums,Periodontiums,Structure, Tooth Supporting,Structures, Tooth Supporting,Supporting Structure, Tooth,Supporting Structures, Tooth,Tooth Supporting Structure
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D011897 Random Allocation A process involving chance used in therapeutic trials or other research endeavor for allocating experimental subjects, human or animal, between treatment and control groups, or among treatment groups. It may also apply to experiments on inanimate objects. Randomization,Allocation, Random
D003758 Dental Implantation, Endosseous Insertion of an implant into the bone of the mandible or maxilla. The implant has an exposed head which protrudes through the mucosa and is a prosthodontic abutment. Dental Implantation, Osseointegrated,Endosseous Dental Implant Therapy,Endosseous Implantation,Osseointegrated Dental Implantation,Endosseous Dental Implantation,Implantation, Endosseous,Implantation, Endosseous Dental,Implantation, Osseointegrated Dental
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D004955 Esthetics, Dental Skills, techniques, standards, and principles used to improve the art and symmetry of the teeth and face to improve the appearance as well as the function of the teeth, mouth, and face. (From Boucher's Clinical Dental Terminology, 4th ed, p108) Cosmetic Dentistry,Aesthetics, Dental,Dental Esthetic,Dental Esthetics,Esthetic, Dental,Cosmetic Dentistries,Dentistries, Cosmetic,Dentistry, Cosmetic
D005260 Female Females
D005883 Gingival Crevicular Fluid A fluid occurring in minute amounts in the gingival crevice, believed by some authorities to be an inflammatory exudate and by others to cleanse material from the crevice, containing sticky plasma proteins which improve adhesions of the epithelial attachment, have antimicrobial properties, and exert antibody activity. (From Jablonski, Illustrated Dictionary of Dentistry, 1982) Gingival Exudate,Crevicular Fluid, Gingival,Crevicular Fluids, Gingival,Exudate, Gingival,Exudates, Gingival,Fluid, Gingival Crevicular,Fluids, Gingival Crevicular,Gingival Crevicular Fluids,Gingival Exudates
D005889 Gingival Recession Exposure of the root surface when the edge of the gum (GINGIVA) moves apically away from the crown of the tooth. This is common with advancing age, vigorous tooth brushing, diseases, or tissue loss of the gingiva, the PERIODONTAL LIGAMENT and the supporting bone (ALVEOLAR PROCESS). Gingival Atrophy,Atrophy of Gingiva,Gingiva Atrophies,Gingiva Atrophy,Gingival Atrophies,Gingival Recessions,Recession, Gingival,Recessions, Gingival

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