Article

Investigation of predictors affecting food mixing ability in mandibulectomy and/or glossectomy patients.

Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan.
Journal of prosthodontic research 04/2009; 53(3):111-5. DOI:10.1016/j.jpor.2009.02.003
Source: PubMed

ABSTRACT Several previous reports have described factors that affect masticatory function. However, there are no known predictors that affect the food mixing ability of the masticatory function, and it has been impossible to predict masticatory function in mandibulectomy and/or glossectomy patients. The purpose of the present study was to develop a numerical formula that could predict the food mixing ability of the masticatory function among mandibulectomy and/or glossectomy patients. The null hypothesis of the study was that five predictors, namely mandibulectomy, mandibular continuity, number of residual mandibular teeth, occlusal units and tongue movement score, were unable to account for the mixing ability index (MAI) in mandibulectomy and/or glossectomy patients.
The subjects were 20 patients who had undergone mandibulectomy and/or glossectomy. The above-described five predictors were assessed. Tongue movement was evaluated with a tongue movement test and the MAI was evaluated with a mixing ability test. Multiple regression analysis was used to examine whether the five predictors affected the MAI after prosthetic treatment.
A regression equation was determined for the five predictors (R(2)=0.83; adjusted R(2)=0.77; p<0.001).
The obtained regression equation could successfully account for the MAI in mandibulectomy and/or glossectomy patients.

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Keywords

affect masticatory function
 
factors
 
five predictors
 
glossectomy patients
 
known predictors
 
mandibular continuity
 
masticatory function
 
mixing ability index
 
mixing ability test
 
Multiple regression analysis
 
null hypothesis
 
numerical formula
 
obtained regression equation
 
occlusal units
 
regression equation
 
residual mandibular teeth
 
Tongue movement
 
tongue movement score
 
tongue movement test
 
unable