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JOMS study: ‘Silent sleep apnea’ prevalent in patients with jaw deformity
  • USA - English


News provided by

American Association of Oral and Maxillofacial Surgeons

Apr 10, 2018, 06:00 ET

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ROSEMONT, Ill. (PRWEB) April 10, 2018 -- Obstructive sleep apnea (OSA) is recognized as a major cause of sleep disturbances and potentially life-threatening breathing disorders, and it is typically discovered in overweight patients. However, a new study finds OSA is often missed during an initial surgical consultation in those with certain jaw deformities, particularly if the patient is not overweight.

After undergoing corrective surgery on the jaws, chin and nasal structures, patients with obstructive sleep apnea and chronic obstructive nasal breathing had low levels of daytime sleepiness over the long term, researchers wrote.

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OSA is a condition during which breathing repeatedly stops for long periods of time and eventually restarts during sleep. Researchers named undiagnosed OSA occurring in normal or even underweight patients as “silent sleep apnea.” Yet, patients who have the type of jaw deformities that leads to OSA can usually be cured through corrective jaw surgery, according to the study published in the April issue of the Journal of Oral and Maxillofacial Surgery – the official journal of the American Association of Oral and Maxillofacial Surgeons (AAOMS).

Obesity is often stated as the cause of OSA, but many patients have a body structure that can result in an upper airway collapse that is characteristic of the condition, researchers noted.

“An interesting finding was that most of our study patients in whom sleep-disordered breathing was initially undiagnosed – and who were then confirmed to have OSA – had either a normal or underweight BMI,” researchers wrote. “We use the term ‘silent sleep apnea’ to describe this subgroup of patients. We surmise that treating physicians and dentists have a lower level of suspicion for OSA when evaluating an individual who is either underweight or of normal weight.”

The study involved 262 patients who had a jaw deformity that often involved a small chin, as well as chronic obstructive nasal breathing. The patients, who underwent surgery, were divided into two groups: those with OSA and those without it.

Of the patients, 23 percent had OSA confirmed by a sleep study (a polysomnogram). The study notes that rate is higher than the estimated rate of OSA in the general population, which is 4 to 5 percent. Seven percent of study patients had OSA at an initial surgical consultation for jaw surgery, and another 16 percent of patients were found to have OSA through the sleep study and an evaluation by a pulmonologist.

Researchers confirmed jaw deformity patients most likely to have OSA were 30 or older with a higher level of BMI and a jaw growth pattern behind the proper position, such as short face or an overbite (primary mandibular deficiency).

After undergoing corrective surgery on the jaws, chin and nasal structures, patients with OSA and chronic obstructive nasal breathing had low levels of daytime sleepiness over the long term, researchers wrote. Among patients with OSA, 91 percent said their daytime sleepiness was “not sleepy” at least one year after surgery.

“The excessive daytime sleepiness associated with OSA has been proved to impair quality of life,” researchers wrote. “This includes links to excessive moodiness, tendency toward depression, stress-related fatigue, personality changes, headaches, and decreased daytime cognitive function (i.e., poor memory and difficulty concentrating).”

The authors of “‘Silent’ Sleep Apnea in Dentofacial Deformities and Prevalence of Daytime Sleepiness After Orthognathic and Intranasal Surgery” are, from Posnick Center for Facial Plastic Surgery, Chevy Chase, Md.: Jeffrey C. Posnick, DMD, MD; Anayo Adachie, DMD, MD; and Neeru Singh, DDS, MD, MA; and, from Howard University Hospital, Washington, D.C.: Elbert Choi, DDS.

The full article can be accessed at http://www.joms.org/article/S0278-2391(17)31167-9/fulltext.
________________

The Journal of Oral and Maxillofacial Surgery is published by the American Association of Oral and Maxillofacial Surgeons to present to the dental and medical communities comprehensive coverage of new techniques, important developments and innovative ideas in oral and maxillofacial surgery. Practice-applicable articles help develop the methods used to handle dentoalveolar surgery, facial injuries and deformities, TMJ disorders, oral and head and neck cancer, jaw reconstruction, anesthesia and analgesia. The journal also includes specifics on new instruments and diagnostic equipment, and modern therapeutic drugs and devices.

# # #

Jolene Kremer, American Association of Oral and Maxillofacial Surgeons, http://aaoms.org, 847-233-4336, [email protected]

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