External fixation greatly improves outcomes in the surgical treatment of osteoradionecrosis of the jaws without affecting quality of life: a five-year retrospective study.

Osteoradionecrosis of the jaw can be treated using both conservative treatment and surgery. External fixation may be used to bridge large resection defects after sequestrectomy for stabilisation and before secondary mandibular reconstruction. We designed a retrospective analysis of 70 patients with osteoradionecrosis treated between the years 2014 and 2018, and found that the use of external fixation greatly improves their outcomes.

Movement of the patient and the cone beam computed tomography scanner: objectives and possible solutions.

Objective: This study aimed (1) to determine whether scanner arm rotation causes significant movement of the head restraint and (2) to measure patient movement and its variation during the scan.

Study Design: The iCAT scanner and a high-speed camera were used. The 40 patients were divided into 2 groups: the open-eyed group and the blindfolded group.

The influence of orthognathic surgery on ventilation during sleep.

Orthognathic surgery has varying effects on respiratory parameters. The authors undertook a prospective study of patients requiring mandibular advancement, mandibular setback and maxillary Le Fort I advancement, and surgically assisted rapid maxillary expansion (SARME). Breathing parameters were monitored in a sleep laboratory the night before the operation and in a mean of 9.

Myosin heavy chain proteins are responsible for the development of obstructive sleep apnea syndrome.

We introduce a hypothesis that obstructive sleep apnea syndrome (OSAS) is primarily caused by an inherited reduced adaptability of upper airway striated muscles such that they cannot maintain patency when there is reduced consciousness (sleep). This reduced ability is caused by a deficiency of the genes for specific myosin heavy chain (MHC) proteins, which are the primary source of muscle adaptability in adults and were initially described in the chewing muscles. The development of OSAS must be linked to problems with striated muscle because affected patients are capable of normal breathing when awake but their respiratory parameters deteriorate during sleep; OSAS must, therefore, be caused by a factor that is voluntarily active during waking but inactive during sleep, and this can only be striated muscle.