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A clinical and histological evaluation of titanium mini-implants as anchors for orthodontic intrusion in the beagle dog

Identifieur interne : 008B07 ( Main/Exploration ); précédent : 008B06; suivant : 008B08

A clinical and histological evaluation of titanium mini-implants as anchors for orthodontic intrusion in the beagle dog

Auteurs : Masami Ohmae [Japon] ; Shigeru Saito [Japon] ; Tomio Morohashi [Japon] ; Kenji Seki [Japon] ; Hong Qu [Japon] ; Ryuzo Kanomi [Japon] ; Ken-Ichi Yamasaki [Japon] ; Tomohiro Okano [Japon] ; Shoji Yamada [Japon] ; Yoshinobu Shibasaki Dds [Japon]

Source :

RBID : ISTEX:497A63A7035191E2FF58CAA91E9D50BBDD5DDCA0

Descripteurs français

English descriptors

Abstract

Abstract: The aim of this study was to determine the anchorage potential of the titanium mini-implant for orthodontic intrusion of the mandibular posterior teeth. Six mini-implants were surgically placed around the mandibular third premolars on each side in 3 adult male beagle dogs. On the buccal site, three mini-implants were placed distal to the apex of the distal root of the third premolar, at the interradicular septa of the third premolar, and mesial to the apex of the mesial root of the third premolar, as linearly as possible. The same procedure was performed at the lingual site on both sides of the mandibular third premolars in each dog. Bilateral interradicular mini-implants on both the buccal and the lingual sites were used as the anchorage for the intrusion of the third premolars (loaded implants) and the other mini-implants were used as control (unloaded) implants. In 6 weeks, an intrusive force (150 g) was applied between the interradicular implants on the buccal and the lingual sites by closed coil springs run across the crowns of the third premolars. After 12 to 18 weeks of orthodontic intrusion, the animals were killed and their mandibles were dissected and prepared for histologic and fluorescent observation. The results indicated that the mandibular third premolars intruded 4.5 mm, on average, after 12 to 18 weeks of orthodontic force application, with mild root resorption at the furcation area as well as the root apex. All the mini-implants remained stable during orthodontic tooth movement without any mobility or displacement. The morphometrical findings indicated that the calcification of the peri-implant bone on the loaded implants was equal to or slightly greater than those of the controls. In addition, 6 of the 36 mini-implants were removed after tooth movement, and all of them were easily removed with a screwdriver. These findings suggest that mini-implants are effective tools for the anchorage of orthodontic intrusion in beagle dogs. (Am J Orthod Dentofacial Orthop 2001;119:489-97)

Url:
DOI: 10.1067/mod.2001.114300


Affiliations:


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Le document en format XML

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<term>American journal</term>
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<term>Backscattered electron images</term>
<term>Beagle</term>
<term>Beagle dogs</term>
<term>Bilateral interradicular</term>
<term>Biological mechanisms</term>
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<term>Buccal implant</term>
<term>Buccal implant position</term>
<term>Buccal site</term>
<term>Buccal sites</term>
<term>Calcein</term>
<term>Cementum</term>
<term>Coil spring</term>
<term>Continuous loading</term>
<term>Control implant</term>
<term>Control tooth</term>
<term>Dental anchorage</term>
<term>Dental radiographs</term>
<term>Dentofacial</term>
<term>Dentofacial orthopedics</term>
<term>Dentofacial orthopedics volume</term>
<term>Distal root</term>
<term>Ebsco media</term>
<term>Effective tools</term>
<term>Endosseous</term>
<term>Endosseous titanium implants</term>
<term>Experimental design</term>
<term>Experimental records</term>
<term>Fluorescent light microscopy</term>
<term>Force application</term>
<term>Furcation area</term>
<term>Further study</term>
<term>High magnification</term>
<term>Histologic</term>
<term>Implant</term>
<term>Implant anchorage</term>
<term>Implant surface</term>
<term>Implantation</term>
<term>Interradicular</term>
<term>Interradicular implants</term>
<term>Interradicular septa</term>
<term>Intramuscular anesthesia</term>
<term>Intrusion</term>
<term>Intrusive force</term>
<term>Ketamine hydrochloride</term>
<term>Ligature wire</term>
<term>Light microscopy</term>
<term>Limited areas</term>
<term>Lingual</term>
<term>Lingual sites</term>
<term>Long axis</term>
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<term>Longitudinal direction</term>
<term>Longitudinal sections</term>
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<term>Mesial root</term>
<term>Mild root resorption</term>
<term>Numbers area</term>
<term>Ohmae</term>
<term>Oral impressions</term>
<term>Oral maxillofac implants</term>
<term>Oral photographs</term>
<term>Oral radiology</term>
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<term>Posterior teeth</term>
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<term>Present study</term>
<term>Radiograph</term>
<term>Recent studies</term>
<term>Resorption</term>
<term>Rigid endosseous implants</term>
<term>Root apex</term>
<term>Root resorption</term>
<term>Root surface</term>
<term>Same procedure</term>
<term>Shigeru saito</term>
<term>Showa university</term>
<term>Skeletal anchorage system</term>
<term>Slight difference</term>
<term>Third premolar</term>
<term>Third premolars</term>
<term>Tiny loop</term>
<term>Titanium</term>
<term>Tooth movement</term>
<term>Vertical displacement</term>
<term>Vertical position</term>
<term>Water cooling</term>
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<term>Adult patient</term>
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<term>American journal</term>
<term>Anchorage</term>
<term>Backscattered electron images</term>
<term>Beagle</term>
<term>Beagle dogs</term>
<term>Bilateral interradicular</term>
<term>Biological mechanisms</term>
<term>Bone interface</term>
<term>Buccal</term>
<term>Buccal implant</term>
<term>Buccal implant position</term>
<term>Buccal site</term>
<term>Buccal sites</term>
<term>Calcein</term>
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<term>Coil spring</term>
<term>Continuous loading</term>
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<term>Dentofacial orthopedics</term>
<term>Dentofacial orthopedics volume</term>
<term>Distal root</term>
<term>Ebsco media</term>
<term>Effective tools</term>
<term>Endosseous</term>
<term>Endosseous titanium implants</term>
<term>Experimental design</term>
<term>Experimental records</term>
<term>Fluorescent light microscopy</term>
<term>Force application</term>
<term>Furcation area</term>
<term>Further study</term>
<term>High magnification</term>
<term>Histologic</term>
<term>Implant</term>
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<term>Intrusive force</term>
<term>Ketamine hydrochloride</term>
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<term>Light microscopy</term>
<term>Limited areas</term>
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<term>Long axis</term>
<term>Longitudinal</term>
<term>Longitudinal direction</term>
<term>Longitudinal sections</term>
<term>Mandibular</term>
<term>Mesial root</term>
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<term>Orthodontic load application</term>
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<term>Orthodontics</term>
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<term>Other hand</term>
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<term>Present study</term>
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<term>Recent studies</term>
<term>Resorption</term>
<term>Rigid endosseous implants</term>
<term>Root apex</term>
<term>Root resorption</term>
<term>Root surface</term>
<term>Same procedure</term>
<term>Shigeru saito</term>
<term>Showa university</term>
<term>Skeletal anchorage system</term>
<term>Slight difference</term>
<term>Third premolar</term>
<term>Third premolars</term>
<term>Tiny loop</term>
<term>Titanium</term>
<term>Tooth movement</term>
<term>Vertical displacement</term>
<term>Vertical position</term>
<term>Water cooling</term>
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<div type="abstract" xml:lang="en">Abstract: The aim of this study was to determine the anchorage potential of the titanium mini-implant for orthodontic intrusion of the mandibular posterior teeth. Six mini-implants were surgically placed around the mandibular third premolars on each side in 3 adult male beagle dogs. On the buccal site, three mini-implants were placed distal to the apex of the distal root of the third premolar, at the interradicular septa of the third premolar, and mesial to the apex of the mesial root of the third premolar, as linearly as possible. The same procedure was performed at the lingual site on both sides of the mandibular third premolars in each dog. Bilateral interradicular mini-implants on both the buccal and the lingual sites were used as the anchorage for the intrusion of the third premolars (loaded implants) and the other mini-implants were used as control (unloaded) implants. In 6 weeks, an intrusive force (150 g) was applied between the interradicular implants on the buccal and the lingual sites by closed coil springs run across the crowns of the third premolars. After 12 to 18 weeks of orthodontic intrusion, the animals were killed and their mandibles were dissected and prepared for histologic and fluorescent observation. The results indicated that the mandibular third premolars intruded 4.5 mm, on average, after 12 to 18 weeks of orthodontic force application, with mild root resorption at the furcation area as well as the root apex. All the mini-implants remained stable during orthodontic tooth movement without any mobility or displacement. The morphometrical findings indicated that the calcification of the peri-implant bone on the loaded implants was equal to or slightly greater than those of the controls. In addition, 6 of the 36 mini-implants were removed after tooth movement, and all of them were easily removed with a screwdriver. These findings suggest that mini-implants are effective tools for the anchorage of orthodontic intrusion in beagle dogs. (Am J Orthod Dentofacial Orthop 2001;119:489-97)</div>
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