Morphogenesis of the peri-implant mucosa: a comparison between flap and flapless procedures in the canine mandible

Tae Min You, Byung Ho Choi, Jingxu Li, Feng Xuan, Seung Mi Jeong, Sun Ok Jang

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


Objective: Although it has been shown that the exclusion of the mucoperiosteal flap can prevent postoperative bone resorption associated with flap elevation, there have been only a few studies on the peri-implant mucosa following flapless implant surgery. The purpose of this study was to compare the morphogenesis of the peri-implant mucosa between flap and flapless implant surgeries by using a canine mandible model. Study design: In six mongrel dogs, bilateral edentulated flat alveolar ridges were created in the mandible. After 3 months of healing, 2 implants were placed in each side by either the flap or the flapless procedure. Three months after implant insertion, the peri-implant mucosa was evaluated by using clinical, radiologic, and histometric parameters, which included the gingival index, bleeding on probing, probing pocket depth, marginal bone loss, and the vertical dimension of the peri-implant tissues. Results: The height of the mucosa, length of the junctional epithelium, gingival index, bleeding on probing, probing depth, and marginal bone loss were all significantly greater in the dogs that had the flap procedure than in those that had the flapless procedure (P < .05). Conclusion: These results indicate that gingival inflammation, the height of junctional epithelium, and bone loss around nonsubmerged implants can be reduced when implants are placed without flap elevation.

Original languageEnglish
Pages (from-to)66-70
Number of pages5
JournalOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology
Issue number1
Publication statusPublished - 2009 Jan

Bibliographical note

Funding Information:
Supported by Medical Science and Engineering Research Center (no. R13-2003-013-01001-0) from the Ministry of Education, Science, Technology, Korea.

All Science Journal Classification (ASJC) codes

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology
  • Dentistry(all)


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