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

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 mo...

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Bibliographic Details
Published in:	BMC oral health Vol. 21; no. 1; p. 19
Main Authors:	Sanz, P Mayoral, Reyes, M Garcia, Torras, A Bataller, Castillo, J A Cabrera, Vich, M O Lagravère
Format:	Journal Article
Language:	English
Published:	England BioMed Central Ltd 07-01-2021 BioMed Central BMC
Subjects:	Adult Care and treatment Cephalometry Demographic aspects Dentistry Dentition Diagnosis Equipment and supplies Facial bones Female Humans Influence Male Mandible Mandible - diagnostic imaging Mandibular advancement device Mandibular position Morphology Obstructive sleep apnea Occlusal Splints Oral appliance design Patients Phenotype Phenotypes Physiological aspects Respiratory therapy Sleep apnea Sleep apnea syndromes Sleep Apnea, Obstructive Standard deviation Teeth Vertical opening Young Adult Spain United States > US Vertical opening Mandibular advancement device Mandibular position Oral appliance design Obstructive sleep apnea
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Summary:	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. 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. 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. 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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1472-6831 1472-6831
DOI:	10.1186/s12903-020-01369-z