Al-Juboori Mohammed Jasim, Ab Rahman Shaifulizan, Hassan Akram, Bin Ismail Ikmal Hisham, Tawfiq Omar Farouq
Department of Oral Surgery, MAHSA Dental College, Kuala Lumpur, Malaysia.
J Periodontal Implant Sci. 2013 Aug;43(4):153-9. doi: 10.5051/jpis.2013.43.4.153. Epub 2013 Aug 31.
The level of the implant above the marginal bone and flap design have an effect on the bone resorption during the healing period. The aim of this study is to detect the relationship between the level of the implant at the implant placement and the bone level at the healing period in the mesial and distal side of implants placed with flapless (FL) and full-thickness flap (FT) methods.
Twenty-two nonsubmerged implants were placed with the FL and FT technique. Periapical radiographs were taken of the patient at implant placement, and at 6 and 12 weeks. By using computer software, bone level measurements were taken from the shoulder of the healing cap to the first bone implant contact in the mesial and distal side of the implant surface.
At 6 weeks, the correlation between the crestal bone level at the implant placement and crestal bone level of the FT mesially was significant (Pearson correlation coefficient=0.675, P<0.023). At 12 weeks, in the FT mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.297, P<0.346). At 6 weeks in the FT distally, the correlation was nonsignificant (Pearson correlation coefficient=0.512, P<0.107). At 12 weeks in the FT distally, the correlation was significant (Spearman correlation coefficient=0.730, P<0.011). At 6 weeks in the FL mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.083, P<0.809). At 12 weeks in the FL mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.062, P<0.856). At 6 weeks in the FL distally, the correlation was nonsignificant (Spearman correlation coefficient=0.197, P<0.562). At 12 weeks in the FL distally, the correlation was significant (Pearson correlation coefficient=0.692, P<0.018).
A larger sample size is recommended to verify the conclusions in this preliminary study. The bone level during the healing period in the FT was more positively correlated with the implant level at implant placement than in the FL.
种植体高于边缘骨的水平以及瓣设计对愈合期的骨吸收有影响。本研究的目的是检测采用无瓣（FL）和全厚瓣（FT）方法植入种植体时，种植体植入时的水平与愈合期种植体近中侧和远中侧骨水平之间的关系。
采用FL和FT技术植入22颗非潜入式种植体。在种植体植入时、6周和12周时对患者进行根尖片拍摄。使用计算机软件，从愈合帽肩部到种植体表面近中侧和远中侧的第一个骨与种植体接触点进行骨水平测量。
在6周时，种植体植入时的嵴顶骨水平与FT近中侧的嵴顶骨水平之间的相关性显著（Pearson相关系数=0.675，P<0.023）。在12周时，FT近中侧的相关性不显著（Spearman相关系数=0.297，P<0.346）。在FT远中侧6周时，相关性不显著（Pearson相关系数=0.512，P<0.107）。在FT远中侧12周时，相关性显著（Spearman相关系数=0.730，P<0.011）。在FL近中侧6周时，相关性不显著（Spearman相关系数=0.083，P<0.809）。在FL近中侧12周时，相关性不显著（Spearman相关系数=0.062，P<0.856）。在FL远中侧6周时，相关性不显著（Spearman相关系数=0.197，P<0.562）。在FL远中侧12周时，相关性显著（Pearson相关系数=0.692，P<0.018）。
建议增加样本量以验证本初步研究中的结论。与FL相比，FT愈合期的骨水平与种植体植入时的种植体水平呈更显著的正相关。
