J Dent Rehabil Appl Sci.  2022 Sep;38(3):171-177. 10.14368/jdras.2022.38.3.171.

Unusual bone regeneration following resective surgery and decontamination of peri-implantitis: a 6-year follow-up

• Kim HJ
• Lee JY

• KMID: 2535022
• DOI: http://doi.org/10.14368/jdras.2022.38.3.171

Abstract

Peri-implantitis is an inflammatory lesion of the periodontium surrounding an endosseous implant, with progressive loss of the supporting peri-implant bone. The main purposes of treatment for peri-implantitis due to biological factors include addressing the inflammation and restoring a healthy but reduced periodontium around the implant, similar to the treatment of periodontitis in natural teeth. The proposed treatment protocol includes surgical treatment, mainly resective surgery, after non-surgical treatment such as oral hygiene instructions, mechanical cleansing of the fixture, and general or topical antiseptic or antibiotic application according to the extent of inflammation. In this article, we present a 6-year follow-up case showing unusual marginal bone regeneration after resective surgery and decontamination of an implant surface for the treatment of peri-implantitis and discuss the possible reasons.

Keyword

dental implants; peri-implantitis; bone regeneration; periosteum

Figure

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  Fig. 1 The initial clinical and radiographic examination. Note the marginal bone loss of approximately 1/3 of the total fixture length of i45 (A) and marginal gingival recession and bleeding tendency (B). Flap elevation and debridement of i45 during resective surgery (C). Note the marginal bone loss and the exposed fixture thread of i45 whereas the surrounding bone is thick and intact around i46 and i47.

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  Fig. 2 Radiograph and clinical photo 5 years after resective surgery. Note the regeneration of the crestal bone around i45 and occurrence of peri-implantitis of i46 (A). Severe marginal loss of i46 and bone regeneration of i45 are observed during the second resective surgery for the treatment of i46 (B).

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  Fig. 3 Radiograph and clinical photos taken 6 years after the 1st resective surgery and 1 year after the 2nd resective surgery. Note the crestal bone regeneration of i45, stable crestal bone level of i46 (A), and the healthy gingival color and shape despite mild gingival recession (B).

Reference

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