Class III skeletal malocclusion
What is a class III bite…???
Class III malocclusion is referred to forwardly protruding lower jaw causing it to overlap the upper jaw. Dental classIII bite is the overlapping of the dentition alone while when the lower jaw itself is protruding than the upper jaw it is reffered as classIII skeletal malocclusion.
What are the causes…???
- Differences in the size of upper and lower jaw
- Differences in the size of tooth and jaw
- Birth defects such as cleft lip and cleft
- Childhood habits such as thumb sucking and
- Prolonged bottle feeding
- Presence of extra teeth
- Misalignments caused due to trauma and
As mentioned above skeletal class III is a result of
retruded maxilla and prognathic mandible or the combination of both. Whatever
may be the cause a proper treatment planning can give the best results.
Patients often approach us with a complain of poor facial appearance. Orthognathic
surgeries have given the best result for class III skeletal malocclusion.
Proper surgery planning and patient cooperation can lead to a perfect result.
- Complete oral prophylaxis
- Recording the upper and lower jaw impressions
and making model cast out of it.
- Marking the desired occlusion on the cast and
preparing an occlusal splint out of it, which will guide the whole surgery to
get the upper and lower segments in a desired occlusion.
- Recently we had a patient with combination of
maxillay retrusion and mandibuar prognathism,hence we planned for le fort I
advancement in maxilla and bringing it forward by
- And BSSO (Bilateral Sagittal Spit osteotomy)
setback for mandible and pushing it backwards by around 4mm.
- And secured the segments using titanium plates
and screws .