Filiz KEYF

She completed her education at Hacettepe University Faculty of Dentistry in 1986. The same year, she began Ph.D. studies in Faculty of Dentistry, Department of Prosthodontics at Hacettepe University. She was appointed research assistant in 1987. She received her Ph.D. from Hacettepe University, Faculty of Dentistry, Department of Prosthodontics in 1990. Dr. Keyf was appointed an Assistant Professor in 1994, Associate Professor in 1996, Professor in 2003 and she has been serving as a Professor in the same department since then. She teaches undergraduate courses such as fixed and removable prosthesis, maxillofacial prostheses, materials science, implantology and ergonomics and also graduate courses in maxillofacial prosthetics. She is the founding member of the Sleep Association in Ankara. Dr. Keyf’s current research interests focus on fixed and removable prosthetic treatments, implantology, dental materials, maxillofacial prostheses and dental treatment of obstructive sleep apnea.


Oral appliances in the treatment of obstructive sleep apnea syndrome

Obstructive sleep apnea (OSA) is a disorder characterized with loud snoring, divided sleep, recurrent airway obstruction during sleep and drowsiness in daytime and adversely affects quality of life. The upper airway obstruction occur during sleep, as a result of various conditions. These patients may experience cardiac arrhythmias, angina, myocardial infarction, mental problems and also can lead to more serious consequences such as traffic accidents.  The treatment of OSA extends from surgical treatment to conservative treatment. OSA therapy can be summarized in four main categories; Behavior modification, the use of continuous positive airway pressure device (CPAP), the use of oral appliances and surgical approaches.
Recently, attention to oral appliance therapy, as mandibular advancement device (MAD) theraphy, is increased. Also the use of intraoral appliances can be in form of soft palate lifting and tongue-retaining devices (TRD). Among the entire range of appliances, MAD is more commonly used. The mechanism of action of MAD is to cause mechanical advancement of the mandible and thereby increasing the anteroposterior dimensions of the oropharynx. Intraoral appliances are generally advocated for mild OSA and simple snoring, and in moderate to severe OSA as an alternative to CPAP or craniofacial surgery. When compared to other methods of treatment of OSA, oral appliances have advantages such as: being able to be better tolerated by patients, cheaper, simple, non-invasive, reversible. When constructing a MAD, some design principles must be considered such as protrusive position and retention. This presentation will be mentioned its basic design features and purpose of the oral appliances therapy, indications, contraindications, appliance tips, advantages, dental examination, lateral sephalometric evaluation, tongue retaining devices, mandibular advancement devices, soft-palate lifters, side effects, non-adjustable and adjustable mandibular reposioning appliances, therapeutic targets and comparison of treatments.