Impact of hypo-salivation on severe tooth wear: A ten-year cohort of patients received radiotherapy for nasopharyngeal carcinoma.
J Dent
; 97: 103343, 2020 06.
Article
in En
| MEDLINE
| ID: mdl-32339601
ABSTRACT
OBJECTIVES:
This study was conducted to examine the tooth wear status of nasopharyngeal-carcinoma (NPC) patients who had received radiotherapy at least 5-year previously, and to investigate the salivary parameters that may be associated with the tooth wear.METHODS:
Tooth wear status of NPC survivors were clinically assessed using the Exact Tooth Wear Index. A tooth was graded to have severe wear when more than one-third of its buccal/occlusal/lingual surface had dentine loss. At the subject-level, percentages of anterior/posterior/all teeth with severe wear were calculated. Age, number of teeth, flow-rate/buffering capacity/pH of stimulated whole (SWS) and parotid (SPS) saliva's were collected. Correlation and multiple-linear regression tests were performed at the significance level αâ¯=â¯0.05.RESULT:
Sixty-eight participants (mean age of 60.0⯱â¯8.9), 697 anterior and 686 posterior teeth were examined with a mean of 10-years post-radiotherapy. Severe tooth wear was found in 63 (92.6 percent) participants, 288 anterior and 83 posterior teeth. The mean percentage of anterior/posterior/all teeth with severe wear were 42.3⯱â¯28.1, 14.5⯱â¯19.9 and 30.0⯱â¯21.7. Anterior teeth, particularly the incisal surface of central incisors were most affected. The mean flow-rate of SWS and SPS were 0.1⯱â¯0.1â¯ml/min and 0.03⯱â¯0.07â¯ml/min respectively. Thirty (44.1 percent) and 48 (70.6 percent) participants were found to have low/no buffering capacity of SWS and SPS respectively. Multiple-regression analyses revealed the SWS flow-rate was associated with the percentage of anterior teeth with severe wear (p=0.03).CONCLUSION:
Anterior tooth wear is a significant dental problem among NPC survivors and was associated with hypo-salivation. CLINICALSIGNIFICANCE:
Patients with hypo-salivation should be being monitored for tooth wear particularly on the anterior teeth.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Nasopharyngeal Neoplasms
/
Tooth Wear
Type of study:
Etiology_studies
/
Risk_factors_studies
Limits:
Child
/
Humans
Language:
En
Journal:
J Dent
Year:
2020
Document type:
Article
Affiliation country:
China