A clinical study of the distribution of occlusal tooth contacts in the intercuspal position at light and hard pressure in adults

Riise, C; Ericsson, Sven Gottmar

doi:10.1111/j.1365-2842.1983.tb01470.x

Cited by 59 publications

(42 citation statements)

References 13 publications

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“…The results of the present study showed that the occlusal contact area increased with clenching intensity, which is in accord with the previous finding (Riise and Ericsson, 1983), and further clarified that the occlusal contact area increased in parallel with the bite force. The increase in contact area would give rise to a fairly constant average bite pressure.…”

Section: Discussionsupporting

confidence: 94%

Influence of Clenching Intensity on Bite Force Balance, Occlusal Contact Area, and Average Bite Pressure

et al. 1999

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It has been difficult for investigators to simultaneously and reliably evaluate bite force in the intercuspal position with the area and location of occlusal contacts. This study was designed to investigate the variations in these parameters with respect to two factors: three levels of clenching and the preferred chewing side. Human subjects with normal occlusion were examined with a recently developed system (Dental Prescale Occluzer, Fuji Film, Tokyo, Japan). The three levels of clenching intensity were assessed by masseteric EMG activity and included the maximum voluntary contraction, and 30% and 60% of the maximum. The results indicated that the bite force and occlusal contact area on the whole dental arch increased with clenching intensity. In contrast, the average bite pressure, obtained by dividing the bite force by the contact area, remained unchanged regardless of the clenching intensity. As the clenching intensity increased, the medio-lateral position of the bite force balancing point shifted significantly (P<0.01) from the preferred chewing side toward the midline. The antero-posterior position remained stable in a range between the distal third of the first molar and the mesial third of the second molar. The bite force and occlusal contact area, which were mainly on the molars, increased with the clenching intensity, whereas the proportions of these two variables on each upper tooth usually did not change significantly. The exception was the second molar on the non-preferred chewing side. When comparisons were made between pairs of specific upper teeth of same name, usually no significant difference was found in bite force or occlusal contact area, regardless of the clenching level. Again, the exception to this observation was the second molar on the preferred chewing side, which had a larger area at the 30% clenching level. The results in normal subjects suggest that as the clenching intensity increases in the intercuspal position, the bite force adjusts to a position where it is well-balanced. This adjustment may prevent damage and overload to the teeth and temporomandibular joints.

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Section: Discussionsupporting

confidence: 94%

Influence of Clenching Intensity on Bite Force Balance, Occlusal Contact Area, and Average Bite Pressure

et al. 1999

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“…This finding was in agreement with that of earlier investigators (Riise, 1982;Riise & Ericsson, 1983) who analysed occlusal contacts in the intercuspal position at light and hard pressure in adults. This suggests that occlusal instability seems to be a common condition, often stated clinically as light pressure by contacts only on one side, or lack of contacts on the molar teeth, which in both cases produce pivot effects on the mandible (Riise, 1982).…”

Section: Discussionsupporting

confidence: 94%

Comparison of muscle activity and occlusal contacts during maximal and habitual clenching in varied chair positions

Kim

Lee

Chung

et al. 1997

J of Oral Rehabilitation

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The activity of anterior temporal muscle, the number of tooth contacts, and total duration of closure during maximal and habitual clenching were studied in varied chair positions. Fifteen subjects were evaluated. The means for the muscle activity of anterior temporal muscle during habitual clenching were 63.5-73.5% of maximum muscle activity. The number of tooth contacts and total duration of closure were significantly increased as biting pressure was increased from habitual to maximal clenching. No significant differences were detected in all variables among varied chair positions. The above results also suggested that occlusal instability was very common. Further research is required to explain the relationship, if any, of these variables to craniomandibular disorders.

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“…33,34 The mean bite force in patients with OSA after OA therapy had been shown to be around 400 N, 25 the load selected for this study. Therefore, it is considered that most of the relevant OCs were identified and recorded.…”

Section: Discussionmentioning

confidence: 99%

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

Ueda

Almeida

Lowe

et al. 2008

The Angle Orthodontist

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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 Ͼ5% were observed in Ͼ90% 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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A clinical study of the distribution of occlusal tooth contacts in the intercuspal position at light and hard pressure in adults

Cited by 59 publications

References 13 publications

Influence of Clenching Intensity on Bite Force Balance, Occlusal Contact Area, and Average Bite Pressure

Influence of Clenching Intensity on Bite Force Balance, Occlusal Contact Area, and Average Bite Pressure

Comparison of muscle activity and occlusal contacts during maximal and habitual clenching in varied chair positions

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

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