Мandibular range of motion and its relation to temporomandibular disorders

Svechtarov, Vassil; Hristova, Miriana; Nencheva-Svechtarova, Savina; Tonchev, Tsvetan

doi:10.14748/.v1i1.1228

Cited by 12 publications

(11 citation statements)

References 24 publications

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“…The purpose of the study was to determine the impact of increased vertical dimension on the range of protrusion of the mandible. Few authors have studied the range of protrusive movements [20, 21], but none at different vertical levels. Since MAD are constructed at various vertical levels, the aim was to determine the range of mandibular protrusion at different vertical points; 2, 5, 8 and 11 mm in a young adult population.…”

Section: Introductionmentioning

confidence: 99%

Antero-posterior mandibular position at different vertical levels for mandibular advancing device design

et al. 2019

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Introduction Mandibular Advancement Devices (MAD) have been reported to be an alternative treatment to CPAP in moderate to severe obstructive sleep apnea (OSA) cases. The design of MAD has a major influence on its success rate on the patient, and design features that have an influence on efficacy, tolerance, and compliance. The aim of this study was to determine the range of mandibular protrusion at different vertical points; 2, 5, 8 and 11 mm in a young adult population. Methods Fifty two students aged 19 to 23 years (mean 21.3 ± 1.7; 29 females and 23 males), with full permanent dentition participated in the study. The absolute range of maximal mandibular protrusion and retrusion was measured (mm) with the use of the George Gauge. Descriptive statistics, ANOVA and paired t-test using SPSS were used. Results Range of mandibular advancement was possible to be determined for the 4 levels of vertical opening with the gauges: 2 mm fork mean mandibular advance 13,10 mm ± 0.604; 5 mm mean 11.98 mm ± 1.075; 8 mm mean 11.20 mm ± 1.369; 11 mm mean 9.87 mm ± 1.886. No significant differences were found between class I, II, and III. Conclusions There is an impact of increased inter-incisal distance of effective mandibular protrusion when constructing a MAD. As vertical dimension increases the mandible rotates posteriorly and places itself in a more retrusive location, and the range of mandibular advancement reduces (0.3 mm for every 1 mm of vertical increase).

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Section: Introductionmentioning

confidence: 99%

Antero-posterior mandibular position at different vertical levels for mandibular advancing device design

et al. 2019

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Section: Discussionmentioning

confidence: 99%

Craniofacial morphology/phenotypes influence on mandibular range of movement in the design of a mandibular advancement device

et al. 2021

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Background The mandibular opening path movements have different directions according to the craniofacial morphology of the patient but always downward and backward, therefore increasing the collapse of the upper airway. The aim of this work is to determine if there is a relationship between the craniofacial morphology and the mandibular movement to help understand the impact on the mandibular position. Methods 52 students with full permanent dentition aged 19 to 23 years (mean 21.3 SD 1.7; 29 females and 23 males), participated in the study. Each subject had a lateral cephalometric radiograph taken. The opening angle was determined for two levels of vertical openings at 5 and 10 mm. Results The opening angle showed a greater variability between subjects ranging from 63.15 to 77.08 for 5 mm angle and from for 61.65 to 75.72 for the 10 mm angle. Differences of facial phenotypes was evident when comparing the individual dissoccluding angle of the low angle horizontal pattern and high angle vertical pattern. Conclusions The opening angle is related to craniofacial morphology with higher vertical anterior and shorter anteroposterior faces having a more horizontal path of mandibular movement than shorter vertical anterior and longer anteroposterior subjects who have a more vertical path.

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“…MADs place the mandible in a determined anteroposterior and vertical position to improve the upper airway cross-sectional area, due to a combination of both their effect of the protrusion of the mandible, and for their capability to stabilize the mandible [30][31][32]. There are different MADs available in which control of the mandibular position with respect to the potential of mouth opening, especially in the supine position, depends on the MAD design [33].…”

Section: Discussionmentioning

confidence: 99%

Craniofacial Morphology/Phenotypes Influence on Mandibular Range of Movement in the Design of a Mandibular Advancement Device

Sanz

Reyes

Torras

et al. 2020

Preprint

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Background. The mandibular opening path movements have different directions according to the craniofacial morphology of the patient but always downward and backward, therefore increasing the collapse of the upper airway. The aim of this work is to determine if there is a relationship between the craniofacial morphology and the mandibular movement to help understand the impact on the mandibular position. Methods. 52 students with full permanent dentition aged 19 to 23 years (mean 21.3 SD 1.7; 29 females and 23 males), participated in the study. Each subject had a lateral cephalometric radiograph taken. The opening angle was determined for two levels of vertical openings at 5 and 10 mm.Results. The opening angle showed a greater variability between subjects ranging from 63,15 to 77,08 for 5 mm angle and from for 61,65 to 75,72 for the 10 mm angle. Differences of facial phenotypes was evident when comparing the individual dissoccluding angle of the low angle horizontal pattern and high angle vertical pattern.Conclusions. The opening angle is related to craniofacial morphology with higher vertical anterior and shorter anteroposterior faces having a more horizontal path of mandibular movement than shorter vertical anterior and longer anteroposterior subjects who have a more vertical path.

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Мandibular range of motion and its relation to temporomandibular disorders

Cited by 12 publications

References 24 publications

Antero-posterior mandibular position at different vertical levels for mandibular advancing device design

Antero-posterior mandibular position at different vertical levels for mandibular advancing device design

Craniofacial morphology/phenotypes influence on mandibular range of movement in the design of a mandibular advancement device

Craniofacial Morphology/Phenotypes Influence on Mandibular Range of Movement in the Design of a Mandibular Advancement Device

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