Influence of the crown-to-implant ratio on the clinical performance of single-tooth implants in the posterior region

doi:10.3877/cma.j.issn.1674-1366.2012.04.012

Abstract

Abstract:

Objective

To investigate the influence of the crown-to-implant ratio （C/I） on implant survival and changes of the marginal bone level （MBL）.

Methods

The study was composed of 52 patients of the prosthodontics department of Foshan Chancheng hospital of Stomatology， who had at least one single-tooth ITI implant with a crown restoration in the posterior region from January， 2008 to February， 2009. All patients were examined clinically and radiographically in recall visits. The anatomic and clinical C/I and the MBL were measured from digital periapical radiographs and then statistically analyzed.

Results

Four implants failed during the follow-up period， and the 3-year survival rate was 95.2%. The mean anatomic C/I was （0.99 ± 0.32）， while the clinical C/I was （1.41 ± 0.33）. No significant influence of the anatomic and clinical C/I was found on the implant survival rate and MBL（P ＞0.05）.

Conclusion

In this study， the C/I did not affect the survival and changes of the marginal bone level of implants supporting single crown restorations in the posterior region of the jaw.

Key words: Crown-to-implant ratio, Survival rate, Marginal bone level

Kang-yuan ZOU, Shu-rong LI, Pei-fen ZHANG, Zhen-nan FU, Jue-qing CHEN. Influence of the crown-to-implant ratio on the clinical performance of single-tooth implants in the posterior region[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2012, 6(04): 366-370.

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URL: https://zhkqyxyjzz.cma-cmc.com.cn/EN/10.3877/cma.j.issn.1674-1366.2012.04.012

https://zhkqyxyjzz.cma-cmc.com.cn/EN/Y2012/V6/I04/366

Figures/Tables 5

References 21

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解剖冠根比	例数	MBL（mm）	统计量
＜1	38	-0.86±0.25	F=2.06
1～1.9	39	-0.46±0.20	P=0.11＞0.05
≥2	2	-0.11±0.00

解剖冠根比	例数	MBL（mm）	统计量
＜1	38	-0.86±0.25	F=2.06
1～1.9	39	-0.46±0.20	P=0.11＞0.05
≥2	2	-0.11±0.00

临床冠根比	例数	MBL（mm）	统计量
＜1	2	-1.84±0.84	F=2.62
1～1.4	51	-0.77±0.08	P=0.09＞0.05
1.5～1.9	20	-0.36±0.09
≥2	6	-0.17±0.05

临床冠根比	例数	MBL（mm）	统计量
＜1	2	-1.84±0.84	F=2.62
1～1.4	51	-0.77±0.08	P=0.09＞0.05
1.5～1.9	20	-0.36±0.09
≥2	6	-0.17±0.05

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