Measure of bite force and occlusal contact area before and after bilateral sagittal split ramus osteotomy of the mandible using a new pressure-sensitive device: A preliminary report

Background/Aim. Bruxism is a parafunctional activity of the masticatory system, which is characterized by clenching or grinding of teeth. The purpose of this study was to determine whether the presence of bruxism has impact on maximum bite force, with particular reference to the potential impact of gender on bite force values. Methods. This study included two groups of subjects: without and with bruxism. The presence of bruxism in the subjects was registered using a specific clinical questionnaire on bruxism and physical examination. The subjects from both groups were submitted to the procedure of measuring the maximum bite pressure and occlusal contact area using a single-sheet pressure-sensitive films (Fuji Prescale MS and HS Film). Maximal bite force was obtained by multiplying maximal bite pressure and occlusal contact area values. Results. The average values of maximal bite force were significantly higher in the subjects with bruxism compared to those without bruxism (p < 0.001). Occlusal contact area was significantly higher in the subjects suffering from bruxism (p < 0.001), while the maximal bite pressure values did not show a significant difference between the studied groups (p > 0.01). Maximal bite force was significantly higher in the males compared to the females in all segments of the research. Conclusion. The presence of bruxism influences the increase in the maximum bite force as shown in this study. Gender is a significant determinant of bite force. Registration of maximum bite force can be used in diagnosing and analysing pathophysiological events during bruxism.

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Occlusal contact area, occlusal pressure, bite force, and masticatory efficiency in patients with anterior disc displacement of the temporomandibular joint

Journal of Oral Rehabilitation ◽

10.1046/j.1365-2842.1999.00481.x ◽

1999 ◽

Vol 26 (11) ◽

pp. 906-911 ◽

Cited By ~ 42

Author(s):

S. Sato ◽

M. Ohta ◽

M. Sawatari ◽

H. Kawamura ◽

K. Motegi

Keyword(s):

Temporomandibular Joint ◽

Contact Area ◽

Bite Force ◽

Disc Displacement ◽

Occlusal Contact ◽

Masticatory Efficiency ◽

Anterior Disc Displacement

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Relation of dietary preference to bite force and occlusal contact area in Japanese children

Journal of Oral Rehabilitation ◽

10.1111/j.1365-2842.2009.01971.x ◽

2009 ◽

Vol 36 (8) ◽

pp. 584-591 ◽

Cited By ~ 17

Author(s):

R. YAMANAKA ◽

R. AKTHER ◽

M. FURUTA ◽

R. KOYAMA ◽

T. TOMOFUJI ◽

...

Keyword(s):

Contact Area ◽

Bite Force ◽

Japanese Children ◽

Occlusal Contact ◽

Dietary Preference

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Changes in Occlusal Contact Area during Oral Appliance Therapy Assessed on Study Models

The Angle Orthodontist ◽

10.2319/100107-470.1 ◽

2008 ◽

Vol 78 (5) ◽

pp. 866-872 ◽

Cited By ~ 31

Author(s):

Hiroshi Ueda ◽

Fernanda R. Almeida ◽

Alan A. Lowe ◽

N. Dorin Ruse

Keyword(s):

Obstructive Sleep Apnea ◽

Contact Area ◽

Oral Appliance ◽

Occlusal Contact ◽

Oral Appliance Therapy ◽

Pressure Sensitive ◽

Obstructive Sleep ◽

Centric Occlusion

Abstract Objective: To test the hypothesis that long-term use of an oral appliance (OA) does not cause changes in the occlusal contact area (OCA). Materials and Methods: Baseline and follow-up treatment study models were obtained for 45 patients with obstructive sleep apnea who had been using an OA for 4 or more days/week for more than 5 years. Study models in centric occlusion, with an inserted pressure-sensitive sheet, were loaded in compression. An image scanner was used to evaluate OCA. Results: A significant change in total OCA was identified in 39 patients (86.7%): a decrease in 26 (66.7%) and an increase in 13 (33.3%) patients. Regional changes >5% were observed in >90% of patients in each of the three regions. In the molar and premolar regions, 24 (53.3%) and 27 (60.0%) of the patients showed an OCA decrease, while only 16 (35.6%) and 15 (33.3%) showed an increase. Conversely, for the anterior region, more increases (24 patients–53.3%) than decreases were identified. Conclusion: The hypothesis is rejected. Long-term OA therapy resulted in dramatic changes of occlusion, suggesting that monitoring of occlusal changes is required.

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Evaluation of Treatments in Patients with Nocturnal Bruxism on Bite Force and Occlusal Contact Area: A preliminary report

European Journal of Dentistry ◽

10.1055/s-0039-1697392 ◽

2008 ◽

Vol 02 (04) ◽

pp. 276-282 ◽

Cited By ~ 21

Author(s):

Alper Alkan ◽

Emel Bulut ◽

Selim Arici ◽

Shuichi Sato

Keyword(s):

Contact Area ◽

Tricyclic Antidepressant ◽

Bite Force ◽

Control Group ◽

Occlusal Splint ◽

Occlusal Contact ◽

Splint Therapy ◽

Fuji Photo Film ◽

Normal Occlusion ◽

Group A

ABSTRACTObjectives: The purpose of this study was to investigate the short-term effects of occlusal splint therapy and tricyclic antidepressants on the bite force and occlusal contact area of patients presenting with nocturnal bruxism.Methods: A maxillary full-coverage hard acrylic splint was applied to the five patients (Group S). Five patients took a tricyclic antidepressant (Amitriptiline HCl, 10 mg/day) for 3 months (Group A) and a control group (Group C) comprising of 10 dental school students with normal occlusion was also formed. Using a Dental Prescale (Fuji Photo Film Corporation, Tokyo, Japan) and an Occluzer computer (FPD703, Fuji Photo Film Corporation, Tokyo, Japan) the bite force and occlusal contact area were measured. The evaluations were made just before the treatment and at 1 month and 3 months of treatment.Results: The bite force and occlusal contact area before treatment in study Groups A and S were found to be higher than those in the Group C. Furthermore, the bite force and occlusal contact area increased during treatment in Group A whilst they decreased in Group S. Bite force and occlusal contact area in Group S were lower at both 1 month and 3 months of treatment than in Group C.Conclusions: It could be tentatively suggested that occlusal splint therapy may be more effective than tricyclic antidepressant in the treatment of bruxism. Further investigations of this measurement method involving larger study populations and a longer follow-up period are needed. (Eur J Dent 2008;2:276-282)

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