Differential application of a repair technique for large perforations of the Schneiderian membrane: case report
전인성, 허민석, 윤구호, 한광흥,
소속 상세정보
전인성 ( Jeon In-Seong ) - 인제대학교 상계백병원 구강악안면외과학교실
허민석 ( Heo Min-Suk ) - 서울대학교 치과대학 구강악안면방사선학교실
윤구호 ( Yoon Kyu-Ho ) - 인제대학교 상계백병원 구강악안면외과학교실
한광흥 ( Han Kwang-Heung ) - 인제대학교 상계백병원 구강악안면외과학교실
KMID : 1025720120310030073
Abstract
Sinus membrane perforation arising during the sinus lift procedure is a very severe complication that can induce the failure of vital bone formation in the bone-graft area, the failure of dental implant osseointegration and sinusitis. In most cases, the size of the perforation was small; therefore, various techniques can be applied to treat sinus membrane perforation. However, the variability in anatomy of the sinus cavity and related surgical miscalculations frequently result in tearing of the Schneiderian membrane. In the case of and extremely thin maxillary sinus membrane, achieving a membrane lift that does not involve membrane tearing is difficult. Sometimes, a pre-existing membrane perforation must be repaired prior to implant restoration; however, in this case, the perforated area may be too large to manage simply. In this report, two cases in which large perforations of the maxillary sinus were repaired through the lateral window approach are reviewed. Pre-existing oro-antral perforations were observed in both cases. In one case, the perforation area was so large that the
torn membrane of the maxillary sinus was sealed and supported with a bilayered collagen membrane. In the other case, the size of the oro-antral perforation was extremely large, and the destruction of the sinus bony floor was severe. Block bone grafting and a collagen membrane were used for support and sealing of the torn membrane and for the bone supporting maxillary sinus floor. The successful repair of sinus membrane perforation was verified by radiographic examination, and a clinically good prognosis was observed during follow-up period.
키워드
Maxillary sinus lift; Dental implants; Repair; Sinus membrane; Tearing
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