Journal List > J Korean Acad Periodontol > v.32(3) > 1049312

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Yoo, So, Han, Cho, and Moon: The comparison between 2 wide implants and 3 regular implants in mandibular posterior area
Original Article

The Journal of the Korean Academy of Periodontology 2002; 32(3): 577-588.

Published online: 30 September 2002

DOI: https://doi.org/10.5051/jkape.2002.32.3.577

The comparison between 2 wide implants and 3 regular implants in mandibular posterior area

Ho-Sun Yoo, Sung-Soo So, Dong-Hoo Han*, Kyoo-Sung Cho, Ik-Sang Moon

Department of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration, Korea.

*Department of Prosthodontics, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration, Korea.

Copyright © 2002 Korean Academy of Periodontology

Abstract

Osseointegrated implants have been established as the standard treatment modality for full/partial edentulous patients since the 1960's, and the long term results for full edentulous patients have proven to be successful. Based on these results osseointegrated implants are now widely used for partial edentulous patients.
There has been an increased interest towards the efficacy of wide implants, despite many reports mentioning the lower success rate of wide implants compared to regular implants. Recently, mandibular molar area defects are commonly restored using 2 wide implants, but it is not determined whether which treatment modality-3 regular implants or 2 wide implants-shows superior success rate.
In this study, 2 wide implants and 3 regular implants used for the restoration of mandibular molar area are used to compare the survival rate of 1-4 years, and to analyze and compare the failure factors. The following conclusions could be drawn from this study.

  1. Wide implants and regular implants showed 94.5% and 97,6% of survival rate respectively. After prosthodontic work, the survival rate was 100% and 98.1% for wide implants and regular implants respectively.

  2. 5 failed implants have been removed. 2 wide implants and 1 regular implant have been removed due to failure of osseointegration, 1 wide implant was removed due to abscess formation caused by over-heating, and 1 regular implant was removed due to mechanical failure caused by over-loading within the first year of function.

  3. No statistically significant difference was observed with respect to the amount of marginal bone loss of wide and regular implants.(P>0.05)

In conclusion, restoration of the mandibular molar area using 3 regular implants was found to be a good treatment modality, and 2 wide implants could be considered a good treatment modality when success factors are taken into account.

Keywords: Wide implant, regular implant, success rate, marginal bone loss

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