Impact of occlusal reconstruction positions on airway dimensions in patients with edentulism and long centric occlusion

Abstract

Objective To study the airway changes of edentulous patients with a magnitude of long centric (MLC) ≥ 1.5 mm during occlusal reconstruction at the centric relation position (CRP) and muscular position (MP). Methods The CRP and MP were determined by Gothic arch. The cephalometric analysis was taken at the two occlusal positions. The sagittal distance of each part of the upper airway was measured. The differences between two occlusal positions were compared. The difference values were calculated by subtracting the two. The correlation between the MLC and the difference value was analyzed. Results The sagittal diameters of palatopharynx and glossopharynx airway at MP were statistically larger than those at CRP (P < 0.05). The MLC had a strong correlation with the ANB angle (r = 0.745, P < 0.001). Conclusion Compared with the occlusal position of CRP, occlusion reconstruction at MP can provide better airway condition for edentulous patients with large MLC.

Using a Portable Ventilatory Airway Screening (PVAS) Device to Evaluate the Difference Between Upper Airway Breathing Pressure and Respiratory Flow in Skeletal Class I and Class II Growing Individuals With Retrognathic Mandible

“…This device offers a practical alternative to conventional diagnostic methods such as spirometry, rhinomanometry, and polysomnography [ 10 , 11 ]. The PVAS device enhances diagnostic accuracy, patient comfort, and early intervention capabilities, providing substantial benefits for patients, healthcare providers, and researchers [ 12 , 13 ].…”