TMJ vibrations in asymptomatic patients using old and new complete dentures.
OBJECTIVE
The aim of this study was to assess the presence of temporomandibular joint (TMJ) noises in subjects with severe bone resorption, who have worn the same complete dentures for over 10 years, and 5 months after treatment with increments of acrylic resin on the occlusal surface after having new dentures in place.


METHODS
After applying the research diagnostic criteria (RDC)/temporomandibular disorder (TMD) questionnaire, 20 asymptomatic subjects were assessed before and 5 months after the new dentures were put in place. Joint vibrations were assessed by the Sono Pak program by selecting the vibrations that occurred during the opening and closing cycle.


RESULTS
The means of the results revealed a nonnormal distribution and were submitted to Kruskal-Wallis statistical analysis (p < 0.05). The vibration means were of low intensity (< or =9.96 Hz). After rehabilitation, there was a reduction in the vibrations (< or =5.2 Hz) statistically significant only at the end of mouth opening with the old dentures when compared with the other cycles.


CONCLUSIONS
The intensity and number of occurrences of joint vibrations were reduced after 5 months of wearing new dentures.
Goiato
Marcelo Coelho
MC
Department of Dental Materials and Prosthodontics, UNESP, São Paulo State University, São Paulo, Brazil. goiato@foa.unesp.br
Garcia
Alício Rosalino
AR
dos Santos
Daniela Micheline
DM
Pesqueira
Aldiéris Alves
AA
D000368:Aged; D000369:Aged, 80 and over; D001862:Bone Resorption / Q000150:complications; D002613:Cheilitis / Q000209:etiology; D003767:Dental Occlusion, Balanced; D019554:Dental Restoration Wear; D003779:Denture Design; D003824:Denture, Complete; D004955:Esthetics, Dental; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007571:Jaw Diseases / Q000150:complications / Q000534:rehabilitation; D007574:Jaw Relation Record; D008137:Longitudinal Studies; D008297:Male; D008310:Malocclusion / Q000209:etiology; D008334:Mandible / Q000502:physiology; D009066:Mouth, Edentulous / Q000150:complications / Q000534:rehabilitation; D016059:Range of Motion, Articular / Q000502:physiology; D013016:Sound; D013704:Temporomandibular Joint / Q000502:physiology*; D014093:Tooth, Artificial; D014159:Transducers; D014716:Vertical Dimension; D014732:Vibration