Clinical efficacy of simple taper retentive implants in immediate posterior dental implantation for 5-7 years

doi:10.7518/hxkq.2023.2022439

Abstract

Abstract:

Objective This study aimed to evaluate the long-term clinical efficacy of simple taper retentive implants in the posterior dental area after immediate implantation for 5-7 years. Methods Selected from January 2015 to December 2017 in the Fourth Affiliated Hospital of Nanchang University dental clinic line tooth area immediately after the implant prosthesis, a total of 38 patients, 53 implants, were deep into (bone under 2 mm or higher) and the upper structure was repaired. In addition, after the completion of tracking observation of 60-90 months, the implant surrounding bone health was recorded and analyzed. Results After 5-7 years of follow-up, 1 of the 53 implants failed to fall out, and the implant retention rate was 98.1%. The amount of bone resorption in the proximal and distal margins 5-7 years after implant restoration was (0.16±0.94) mm and (-0.01±1.29) mm, respectively, and the difference in bone height between the proximal and distal margins of the implant and the immediate post-restoration period was not statistically significant (P>0.05). No statistically significant differences were found in the effects of periodontitis, implant site inflammation, and smoking on peri-implant marginal bone resorption (P>0.05). Conclusion The single taper-retained implant broadens the indications for immediate implant placement in the posterior region, and its deep sub-osseous placement (≥2 mm below the bone) avoids to a certain extent the disturbance of the implant by external stimuli and the exposure of the cervical abutment of the implant, with the good long-term stability of the marginal bone around the implant.

Key words: simple taper fixation, posterior dental area, immediate implant placement, bone resorption

CLC Number:

R 783

Ren Bihui, Guo Shuigen, Xu Yehao, Dai Jieting, Wei Hongwu.. Clinical efficacy of simple taper retentive implants in immediate posterior dental implantation for 5-7 years[J]. West China Journal of Stomatology, 2023, 41(3): 341-349.

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基本信息	分类	n/%
性别	男	26/68.4
	女	12/31.6
年龄/岁	≤65	31/81.6
	>65	7/18.4
种植位点/枚	上颌	18/34.0
	下颌	35/66.0
	前磨牙	8/15.1
	磨牙	45/84.9
有无牙周炎	有	30/78.9
	无	8/21.1
是否吸烟	是	21/55.3
	否	17/44.7
根尖是否有炎症	有	28/52.8
	无	25/47.2

长度/mm	直径/mm				总计/枚
长度/mm	4.0	4.5	5.0	6.0	总计/枚
合计	1	17	17	15	50
6	0	4	1	8	13
8	0	9	10	6	25
11	1	4	6	1	12

骨高度	T0	T1	T2	T1-T0	T2-T1	T2-T0
P值	0.559	0.679	0.174	0.901	0.328	0.458
近中骨高度	2.43±1.92	1.55±1.42	1.71±1.34	-0.88±1.73*	0.16±0.94	-0.72±1.61*
远中骨高度	2.33±1.72	1.47±1.71	1.47±1.36	-0.86±1.19*	-0.01±1.29	-0.86±1.55*

种植位点	ΔT2-T1	P值	ΔT2-T1_（组间）	P_组间值
上颌	-0.12±1.59	0.661	-0.31±1.70	0.303
下颌	0.18±0.79	0.069
前磨牙	-0.53±1.80	0.261	-0.75±2.42	0.232
磨牙	0.19±0.92	0.059

种植体型号		ΔT2-T1	P值	P_组间值
直径/mm	4.5	0.11±0.15	0.494	0.991
	5.0	0.07±1.51	0.770
	6.0	0.06±0.91	0.729
长度/mm	6	0.09±0.81	0.595	0.838
	8	0.17±1.43	0.413
	11	-0.05±0.77	0.776