Biomedical subjects
Publications and source records attributed to O Seçkin.
Functional jaw orthopedics is an orthodontic treatment which uses muscle stimuli developed from the functions and tonus changes of masticatory, tongue, lip and cheek muscles. The functional regulator which is one of the appliances used in this treatment, takes support not from the teeth, but directly from the soft tissues in order to make changes in alveolar bone and teeth.
The FR I appliance, which aims the sagittal, vertical and transversal development of intraoral cavity by keeping away the perioral muscles is used widely in crowded Angle Class I and Class II Division 1 cases. The most active period for Frankel I treatment is the time upper and lower incisors finish their eruption and the posterior deciduous teeth are in their places only for retention. In the 11 year old patient treated with FR I appliance for 6 months, the ANB angle decreased by 3.5 degrees and an anterior development of mandible was established. Also a transversal development in lower and upper jaws and sagittal development in the lower jaw were seen.
The Frankel II appliance which is used in Angle Class II Division 2 cases, establish sagittal, vertical and transversal development of the jaws by keeping away the perioral muscles as in the other functional regulators. The difference between FR II and FR I appliances is the design of canine wires. After 8 months of FR II treatment of the 11 year old Class II Div. 2 patient with 5 mm. overbite, as the overbite decreased by 3 mm., the FMA angle increased and a transversal and sagittal development was established in both upper and lower jaws.
The Frankel III appliance is used in Angle Class III, maxillary deficiency cases. The vestibular and buccal shilts changes the sagittal relationship of the jaws in Class III cases by developing the upper jaw sagittally, vertically and transversally. After 7 months of FR III treatment of an 11 year old Class III patient, the molar relationship and anterior crossbite were corrected. As the SNA angle increased, the -2 degrees ANB an le changed to 2 degrees. As there were no transversal and sagittal development in lower jaw, the upper jaw expanded transversally and sagittally. Also the FR IV appliance is used in the treatment of open-bite and bimaxillary protrusion cases.
Class II, division 1 cases are treated by many different techniques depending on the age of the patient and cause of the malocclusion. To overcome the undesirable effects of headgear on anchor teeth, a removable appliance, the maxillary traction splint, is used with extraoral forces. In this study, 15 patients with maxillary dentoalveolar protrusions and Class II, division 1, malocclusions were treated with a maxillary traction splint. Cephalograms taken before and after treatment and the sagittal skeletal and dental changes were evaluated and quantified. The results showed that use of the maxillary traction splint prior to fixed appliance therapy is effective in correcting dentoalveolar protrusion in growing patients.
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