Comparison of root resection and tunnel preparation in the clinical outcome of furcation-involved mandibular molars

Cheol-Woo Kim; Jin-Woo Park; Jo-Young Suh; Jae-Mok Lee

doi:10.5051/jkape.2009.39.1.53

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Kim, Park, Suh, and Lee: Comparison of root resection and tunnel preparation in the clinical outcome of furcation-involved mandibular molars

Original Article

The Journal of the Korean Academy of Periodontology

The Journal of the Korean Academy of Periodontology 2009; 39(1): 53-58.

Published online: 31 March 2009

DOI: https://doi.org/10.5051/jkape.2009.39.1.53

Comparison of root resection and tunnel preparation in the clinical outcome of furcation-involved mandibular molars

Cheol-Woo Kim, Jin-Woo Park, Jo-Young Suh, Jae-Mok Lee

Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, Korea.

Correspondence: Dr. Jae-Mok Lee. Department of Periodontology, School of Dentistry, Kyungpook national University, 188-1, Samduk-dong 2ga, Jung-gu, Daegu 700-412, Korea. leejm@knu.ac.kr, Tel: 053-600-7511, Fax: 053-427-3263

Received 13 January 2009 Accepted 16 May 2009

Abstract

Purpose

The resective treatment in mandibular Degree III furcation areas includes root resection and tunnel preparation. The purpose of this retrospective study is to evaluate which treatment procedure(root resection vs tunnel preparation) has more favorable prognosis in mandibular Degree III furcation involvement.

Materials and methods

The subjects of this study were patients who were treated their mandibular posteriors with either root resection(22 teeth on 22 patients) or tunnel preparation(24 teeth on 22 patients) and have participated in periodic recall check program for at least 2 years. Failure rate, plaque index, bleeding on probing and probing pocket depth were measured and the results were compared and statistically analysed.

Results

Failure rates of root resection and tunnel praparation were 13.6% and 16.7%, respectively, and showed no significant difference between two procedures. No significant differences were observed between two procedures with respect to plaque index, bleeding on probing and probing pocket depth.

Conclusion

root resection and tunnel preparation are both effective procedures to treat mandibular posterior furcation involvement, if adequate treatment of choice is made and patient's cooperation is accompanied. However, tunnel preparation is more preservative procedure in mandibular posterior furcation involvement since root canal treatment and prosthetic restoration are needed additionally, in case of root resection.

Keywords: root resection, tunnel preparation, mandibular Degree III furcation areas

Figures and Tables

Figure 1

Tunneling of #36: preoperative radiograph and photo.

Figure 2

Tunneling of #36: postoperative radiograph and photo (25 months).

Figure 3

Root resection of #46: preoperative radiograph and photo.

Figure 4

Root resection of #46: postoperative radiograph and photo (5 years).

Table 1

Failure Rate(Number of Extracted Teeth)

the difference between two groups was not statistically significant. (p=0.551>0.05)

Table 2

Distribution of Teeth by Plaque Index(by Number of Teeth)

the difference between two groups was not statistically significant. (p=1.000>0.05)

Table 3

Bleeding on Probing(by Number of Surfaces)

the difference between two groups was not statistically significant. (p=0.6727>0.05)

Table 4-1

Probing Pocket Depth-Root Resection(by Number of Surfaces)

Table 4-2

Probing Pocket Depth-Tunnel Preparation(by Number of Surfaces)

the difference between two groups was not statistically significant. (p=0.0855>0.05)

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