Correction of D.entofacial ,Deformities Medical Assignment Help

CHAPTER OUTLINE

‘CAUSES OF DENTOFACIAl DEFORMITY
General Principles of Facial Growth
Genetic and Environmental Influence
EVALUATION OF PATIENTS WITH DENTOFACIAl
DEFORMITY
PRESURGICAL T~EATMENT PHASE
Periodontal Considerations
Restorative Considerations
Presurgical Orthodontic Considerations
Treatment Timing
Orthodontic Treatment Objectives
Final Treatment Planning
SURGICAL TREATMENT PHASE
Mandibular ElEcess
Mandibular Deficiency
Maxillary Excess
Maxillary. and Midface Deficiency
Combination Deformities and Asymmetries
DISTRACTION OSTEOGENESIS
PERIOPERATIVE ~ARE OF THE ORTHO~NATHIC
SURGICAL PATIENT
POSTSURGICAL TREATMENT PHASE
Completion of Orthodontics
Postsurgical Restorative and Prosthetic
Considerations .
Postsurgical Dental and Periodontal Considerations
SUMMARY

ePidemiOlogic surveys demonstrate that a large per-
– centage of the United States’ population has a significant
malocclusion. Many of these cases are
severe enough to affect facial proportions, and approxi-
-mately 5% may be classified ashandlcapplng.!
Approximately 10% of the populatlon has a class U malocclusion, 1% of which require surgical advancement of the mandible to correct the skeletal deficiency. A small percentage of the population requires surgical correction of anteroposterior maxillary excess to treat their class II
malocclusions most satisfactorily, Class III malocclusions occur in 2.5% of the population, with 40% of these cases being severe enough to require surgical correction toobtain the best occlusal and esthetic result. In many classIII malocclusions, the deformities can be attributed to
abnormal skeletal position of the mandible: however, nearly 50% may be at least partially caused by maxillary deficiency. ‘
Historically treatment of dentofacial deformities has been aimed’ at correction of dental abnormalities, with little attention to the accompanying deformity of the facial skeleton. In the last 40 years, surgical techniques have been developed to allow positioning of the entire
midface complex, mandible, or dentoalveolar segments to any desiredpositlon. The combining of surgical and orthodontic procedures for dentofacial deformities has  ecome an integral part of the correction of malocclu– sions and facial abnormalities. ‘

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