Al-Rasheed Abdulaziz, Al-Shabeeb Munirah Saleh, Babay Nadir, Javed Fawad, Al-Askar Mansour, Wang Hom-Lay, Al-Hezaimi Khalid
Int J Periodontics Restorative Dent. 2014 May-Jun;34(3):413-21. doi: 10.11607/prd.1809.
The aim of this study was to histologically assess alveolar bone remodeling around immediate implants placed in single and multiple contiguous extraction sites. Ten dogs were divided into three groups (with six sites per group) on the basis of premolar teeth extraction: group 1 = one tooth extracted, group 2 = two contiguous teeth extracted, and group 3 = more than two contiguous teeth extracted. Immediate implants were placed in each group. Histologic assessment of arches showed no evidence of vertical bone loss (VBL) around implants in group 1 compared with groups 2 (P < .001) and 3 (P < .001). Buccal and lingual bone thicknesses and bone-to-implant contact (BIC) were higher around implants in group 1 compared with groups 2 (P < .001) and 3 (P < .05). Buccal and lingual bone thicknesses, BIC, and VBL are compromised around implants in multiple contiguous extraction sites compared with those in a single extraction site.
本研究的目的是从组织学角度评估即刻种植于单个和多个相邻拔牙位点的种植体周围牙槽骨的改建情况。根据前磨牙拔牙情况，将10只犬分为三组（每组6个位点）：第1组 = 拔除一颗牙，第2组 = 拔除两颗相邻牙，第3组 = 拔除两颗以上相邻牙。每组均植入即刻种植体。对牙弓进行组织学评估发现，与第2组（P <.001）和第3组（P <.001）相比，第1组种植体周围无垂直骨吸收（VBL）迹象。与第2组（P <.001）和第3组（P <.05）相比，第1组种植体周围的颊侧和舌侧骨厚度以及骨与种植体接触（BIC）更高。与单个拔牙位点的种植体相比，多个相邻拔牙位点的种植体周围的颊侧和舌侧骨厚度、BIC以及VBL均受到影响。
