Success and survival rate of the implant with crestal sinus lift using S-reamer and gel-type graft material: A retrospective study by more 5-years follow check up
The Journal of Korean Academy of Prosthodontics
pISSN 0301-2875, eISSN 2005-3789 23 서론 임플란트가 처음 개발된 이후 치과 치료는 혁신적인 발전을 이 루었다. 그러나 상악구치부에 임플란트 식립은 구치부의 골 흡 수, 상악동의 함기화(pneumatization), 불량한 골질 등으로 임플 란트 식립에 어려움을 안고 있다. 1 특히 치조골의 수직 골량의 부 족은 임플란트의 식립에 어려움이 있으며 짧은 임플란트 식립은 낮은 성공률로 이어졌다. 2,3 이러한 수직 골량의 부족을 극복하기 위한 방법으로 1977 년 Tatum이 Caldwell-Luc 수술법을 변형한 일명 측방 접근법 (lateral window method)를 제안했다. 4 그러나 이러한 측방접근 법은 상악동 막의 천공, 동맥 천공에 따른 과다출혈, 감염, 상악 동염 등의 많은 합병증을 가지고 있었다. 5-7 측방 접근법의 합병증들을 극복하고자 치조정 접근법(crestal approach method)인 osteotome 방법이 소개되었다.
... teotome 방법이 소개되었다. 1,8 이러한 osteotome 방식은 상악동막을 거상하는 량에 한계가 있으며, https://doi. Purpose: The purpose of this retrospective study was to evaluate the method using the S-reamer and gel-type graft material by the success rate and survival rate. Materials and methods: Implantation period was from 2008 to 2014, Follow check up year is 2019. There were 59 patients and 117 implants. All implants were placed in the posterior maxilla with the sinus lift. The patients population consisted of 34 men and 25 women, ranging from 19 to 75 years. The residual bone heights were from 1 mm to 6 mm. Sinus was perforated with S-reamer without membrane tearing and gel type bone graft material was used for membrane lifting and filling the space. all implants were placed simultaneously. Panoramic X-ray was taken. After 5 -6 months healing period, final prostheses were restored. After more 5-years implant surgery, Panoramic X-ray was obtained and X-ray analysis and clinical examination were performed. Success criteria was referred to a Buser's success critera. All implants were classified to success implant, survival implant, failed implant. A success implant was satisfying success criteria, a survival implant was a implant that was acute infection with suppuration and bone loss, a failed implant was a implant that was mobile, removed. Results: Five implants were removed, and 4 implants had infected with bone loss. Survival rate was 95.7% and success rate was 92.3%. Conclusion: This retrospective study presented that this method with S-reamer and gel-type graft material was a successful treatment without membrane tear in the condition of 1-6 mm residual bone height. (J Korean Acad Prosthodont 2020;58:23-9)