Retrospective study on marginal bone resorption around immediately loaded implants

Sung-Hoon Lee; Ji-Hye Jung; Jin-Han Lee; Hye-Won Cho

doi:10.4047/jkap.2018.56.2.114

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Lee, Jung, Lee, and Cho: Retrospective study on marginal bone resorption around immediately loaded implants

Original Article

The Journal of Korean Academy of Prosthodontics 2018; 56(2): 114-119.

Published online: 25 April 2018

DOI: https://doi.org/10.4047/jkap.2018.56.2.114

Retrospective study on marginal bone resorption around immediately loaded implants

Sung-Hoon Lee, Ji-Hye Jung, Jin-Han Lee, Hye-Won Cho

Department of Prosthodontics, College of Dentistry, Wonkwang University, Iksan, Republic of Korea.

Corresponding Author: Hye-Won Cho. Department of Dentistry, Graduate School, Wonkwang University, 460 Iksan-Daero, Iksan 54538, Republic of Korea. +82 (0)2 63 859 2938: hwcho@wku.ac.kr

Received 31 January 2018 Revised 6 March 2018 Accepted 15 March 2018

The Korean Academy of Prosthodontics

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

Patients who treated implant immediate loading within a week after implant placement at Wonkwang University Dental Hospital Implant Center were evaluated marginal bone resorption. These retrospective analyses are intended to reinforce the clinical evidence for the implant immediate loading.

Materials and methods

Medical history and radiographic data were investigated, which were the patients' who treated implant immediate loading and restoration with provisional prostheses between January 2005 and June 2016, at Wonkwang University Dental Hospital Implant Center. Total number of implants was 70, marginal bone resorption was measured according to implant length, diameter and connection type. To measure marginal bone resorption, periapical radiographs were taken when the implants were placed and after 6 month. Statistical analysis was done in Mann-whitney U test and Kruskal-wallis test with SPSS 22.0 software (P<.05).

Results

Mean marginal bone resorption around immediately loaded implants according to implant connection type was shown 1.24 ± 0.72 mm in internal hexagon connection type and 1.73 ± 1.27 mm in external hexagon connection type. There was no statically significant difference in marginal bone resorption with implant length and diameter.

Conclusion

Implants with immediated loading in internal hexagon connection type showed less marginal bone resorption significantly than in external hexagon connection type.

Keywords: Immediate dental implant loading, Bone resorption

Figures and Tables

Fig. 1

White arrows indicate 10 reference points with 100% blowed up periapical images.

Fig. 2

References used to measure the actual marginal bone resorption.

B′: marginal bone resorption on digital subtraction image. P′: width of implant platform on digital subtraction image.

B = P × B′ / P′

P: actual width of implant platform (mm)

P′: width of implant platform on digital subtraction image (mm)

B: actual marginal bone resorption (mm)

B′: marginal bone resorption on digital subtraction image (mm)

Table 1

Features of implants investigated in this study

Table 2

Marginal bone resorption around immediate loading implants according to implant connection type

^*significantly different (P < .05)

Table 3

Marginal bone resorption around immediate loading implants according to implant manufacturer

Table 4

Marginal bone resorption around immediate loading implants according to implant length and implant diameter

Notes

This study was supported by Wonkwang University 2018.

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