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Full-Text Articles in Medicine and Health Sciences
Quantitative Analysis Of First- Versus Second-Premolar Extraction Effects In Orthodontic Treatment, Robert A. Turner
Quantitative Analysis Of First- Versus Second-Premolar Extraction Effects In Orthodontic Treatment, Robert A. Turner
Theses and Dissertations (ETD)
Malocclusions can involve arch-size tooth-size discrepancies that have to be resolved by premolar extractions. Treatment planning in such cases usually involves removing first (P1) or second premolars (P2). Choosing an extraction pattern is a learned skill that incorporates many diagnostic factors. This study compared the amounts of in-treatment tooth movement in two common extraction patterns (4/4 and 5/5) in order to gain insight into the criteria used for differential diagnosis and treatment planning. Objective: A method of cast analysis was developed to measure the anteroposterior and transverse changes in tooth positions during orthodontic treatment. Data were used (1) to …
Cephalometric Evaluation Of One-Phase And Two-Phase Treatment Alternatives In Matched Class Ii Subjects, Fredrick Jerome Burr
Cephalometric Evaluation Of One-Phase And Two-Phase Treatment Alternatives In Matched Class Ii Subjects, Fredrick Jerome Burr
Theses and Dissertations (ETD)
“Early” or two-phase orthodontic treatment of Class II malocclusions is a highly debated topic in the orthodontic literature. We report here on a retrospective cephalometric study of patients with Class II, division 1 malocclusions. One group consisted of 32 consecutively treated patients who received “early” treatment with a Fränkel II appliance followed by treatment with full fixed appliance. These subjects were “matched” by sex and cephalometric value, to a subject treated with standard edgewise appliances in a single phase. Matching criteria focused on the bony facial characteristics, notably ANB, NAP, Y Axis, AOBO, FMA, overjet, and overbite. The question was …
Root Morphology And Sexual Dimorphism : Size Standards For Crown And Root Dimensions In Adolescents, William Max Couch
Root Morphology And Sexual Dimorphism : Size Standards For Crown And Root Dimensions In Adolescents, William Max Couch
Theses and Dissertations (ETD)
“Early” or two-phase orthodontic treatment of Class II malocclusions is a highly debated topic in the orthodontic literature. We report here on a retrospective cephalometric study of patients with Class II, division 1 malocclusions. One group consisted of 32 consecutively treated patients who received “early” treatment with a Fränkel II appliance followed by treatment with full fixed appliance. These subjects were “matched” by sex and cephalometric value, to a subject treated with standard edgewise appliances in a single phase. Matching criteria focused on the bony facial characteristics, notably ANB, NAP, Y Axis, AOBO, FMA, overjet, and overbite. The question was …