Nagarajan Balaji, Murthy Varsha, Livingstone David, Surendra Manohar Paul, Jayaraman Srinivasan
Post Graduate, Department of Prosthodontics & Implantology, Indira Gandhi Institute of Dental Sciences , Puducherry, India .
Professor, Department of Prosthodontics & Implantology, Indira Gandhi Institute of Dental Sciences , Puducherry, India .
J Clin Diagn Res. 2015 Dec;9(12):ZC47-50. doi: 10.7860/JCDR/2015/13911.7000. Epub 2015 Dec 1.
Depth of placement of implant shoulder in relation to the crestal bone positively influence bone remodelling and preservation but the role of placement depth on bone loss before loading is not very clear.
To assess the effect of placement depth alone on the crestal bone loss around implant placed at subcrestal and equicrestal level before prosthetic loading.
Patients reporting to the Department of Prosthodontics with the complaint of missing teeth were enrolled in the study after analysing inclusion and exclusion criteria. A total of 24 implants were planned to be placed into two groups as Group E (n=12) and Group S (n=12). Follow up radiographs after implant placement and after six months were analysed for the amount of bone loss.
On six months follow up crestal bone levels of Group E were apical to Group S. Bone loss comparison between groups after six months follow up, revealed almost same mean bone loss.
The implants placed at subcrestal and equicrestal level did not show difference in crestal bone loss before prosthetic loading.
种植体肩部相对于嵴顶骨的植入深度对骨重塑和骨保存有积极影响,但植入深度对加载前骨丢失的作用尚不清楚。
评估在修复体加载前,单独的植入深度对种植体置于牙槽嵴顶下方和牙槽嵴顶水平时周围嵴顶骨丢失的影响。
在分析纳入和排除标准后,将因牙齿缺失前来口腔修复科就诊的患者纳入本研究。计划总共植入24枚种植体,分为E组(n = 12)和S组(n = 12)。分析种植体植入后及六个月后的随访X线片,观察骨丢失量。
六个月随访时,E组的嵴顶骨水平位于S组根尖方向。六个月随访后两组间骨丢失比较显示,平均骨丢失量几乎相同。
种植体置于牙槽嵴顶下方和牙槽嵴顶水平时,在修复体加载前嵴顶骨丢失无差异。