Unilateral nasal obstruction mediates reversible morphological and phenotypic changes in masticatory muscles of growing rats.

Objective: Mouth breathing as a result of nasal obstruction affects craniofacial growth and development. This study aimed to investigate the effects of unilateral nasal obstruction and its recovery, along with the role of nitric oxide (NO) in masticatory muscle physiology.

Materials And Methods: Forty-eight 4-week-old male rats were divided into control and experimental groups.