Bite force and sleep quality in patients with bruxism before and after using a mandibular advancement device

  • Vivian Chiada Mainieri PUCRS
  • Aline Cristina Saueressig PUCRS
  • Simone Chaves Fagondes UFRGS
  • Ézio Teseo Mainieri UFRGS
  • Rosemary Sadami Arai Shinkai PUCRS
  • Márcio Lima Grossi PUCRS
Keywords: Bite force, bruxism, mandibular advancement device

Abstract

Purpose: This study aimed to compare bite force and sleep quality in patients with bruxism before and after using a soft mandibular advancement device. Methods: Eighteen patients with bruxism attending the Occlusion Clinics of the PUCRS Dental School were selected according to the study eligibility criteria, examined according to the RDC/DTM protocol, and treated with a soft mandibular advancement device. Before the treatment and after 30 days the subjects were tested for: maximal bite force with a cross-arch force transducer placed in the first molar region, sleep quality assessed by means of the University of Toronto Sleep Assessment Questionnaire (SAQ), and number of masseter muscle contractions during sleep measured with the adhesive BiteStrip®. Data were analyzed by Student t tests, Wilcoxon tests, and McNemar tests at a significance level of 0.05. Results: After 30 days using the mandibular advancement device there was a significant decrease in some bruxism parameters, bite force, and total SAQ score (P < 0.05). Conclusions: The results suggest that the use of a soft mandibular advancement device for one month reduced bite force and bruxism and improved sleep quality in this sample. Key words: Bite force; bruxism; mandibular advancement device

Author Biographies

Vivian Chiada Mainieri, PUCRS
Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
Aline Cristina Saueressig, PUCRS
Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
Simone Chaves Fagondes, UFRGS
Medical School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
Ézio Teseo Mainieri, UFRGS
Dental School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
Rosemary Sadami Arai Shinkai, PUCRS
Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
Márcio Lima Grossi, PUCRS
Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
Published
2008-06-22
Section
Original Article