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  • Title: Change in masticatory ability with the implant restoration of second molars.
    Author: Nam DH, Lee DW, Chung CJ, Kim KH, Park KH, Moon IS.
    Journal: J Prosthet Dent; 2014 Apr; 111(4):286-92. PubMed ID: 24331850.
    Abstract:
    STATEMENT OF PROBLEM: Controversy exists as to whether missing second molars should be replaced to restore masticatory ability. PURPOSE: The purpose of this study was to analyze the alteration in masticatory ability associated with the implant restoration of the second molar; the subjective effect of implant treatment on the participant was also assessed. MATERIAL AND METHODS: Twenty-one individuals (13 men and 8 women) participated. Masticatory ability was recorded before the cementation of implant-supported single crowns, immediately after cementation, and 1 month after cementation. The occlusal load (Pa), the load-bearing contact area (mm(2)), and the maximum occlusal force (N) were calculated. A subjective evaluation of masticatory ability was conducted before treatment and 1 month after treatment through the use of a questionnaire to evaluate chewing difficulties and global satisfaction with treatment. The Wilcoxon signed rank test was used to analyze the difference in scores. RESULTS: The load-bearing contact area, maximum occlusal force, and participant satisfaction were found to increase significantly 1 month after the cementation of implant-supported single crowns. The restoration of the second molar with an implant increased both objective masticatory ability and subjective satisfaction 1 month after cementation of the implant-supported single crowns. CONCLUSIONS: Patients presenting with a missing second molar may benefit from replacement with implant-supported crowns. Longer study periods and larger sample populations are needed to obtain more definitive results.
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