Journal of the American Dental Association (1939) · 2007
The use of temporary anchorage devices for molar intrusion.
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Kravitz Neal D, Kusnoto Budi, Tsay T Peter, Hohlt William F
Аннотация
BACKGROUND: This article reviews the use of temporary anchorage devices (TADs) for maxillary molar intrusion.
TYPES OF STUDIES REVIEWED: The authors reviewed clinical, radiographic and histologic studies and case reports. The studies provided information regarding the application, placement and biological response of orthodontic TADs.
RESULTS: TAD-supported molar intrusion is controlled and timely and may be accomplished without the need for full-arch brackets and wires. Supraerupted maxillary first molars can be intruded 3 to 8 millimeters in 7.5 months (approximately 0.5-1.0 mm per month), without loss of tooth vitality, adverse periodontal response or radiographically evident root resorption.
CLINICAL IMPLICATIONS: True molar intrusion can be achieved successfully with orthodontic TADs, re-establishing a functional posterior occlusion and reducing the need for prosthetic crown reduction.
TYPES OF STUDIES REVIEWED: The authors reviewed clinical, radiographic and histologic studies and case reports. The studies provided information regarding the application, placement and biological response of orthodontic TADs.
RESULTS: TAD-supported molar intrusion is controlled and timely and may be accomplished without the need for full-arch brackets and wires. Supraerupted maxillary first molars can be intruded 3 to 8 millimeters in 7.5 months (approximately 0.5-1.0 mm per month), without loss of tooth vitality, adverse periodontal response or radiographically evident root resorption.
CLINICAL IMPLICATIONS: True molar intrusion can be achieved successfully with orthodontic TADs, re-establishing a functional posterior occlusion and reducing the need for prosthetic crown reduction.