51 research outputs found
Titanium miniscrews under continuous loading in a Pig jaw: a histological study
There is increasing interest in using titanium miniscrews for orthodontic anchorage. This experimental study aimed to evaluate the histological aspect of mandibular bone around miniscrews subjected to continuous forces in a pig. Three miniscrews were inserted on both sides of a pig mandible. Four weeks after implantation, a coil spring was fixed between two of the right miniscrews, while the left miniscrews remained unloaded. The pig was sacrificed nine weeks after implantation. Two right screws were lost during this period: one loaded screw and the unloaded one. Microradiographic and histological analysis revealed bone apposition in contact of about 1/3 of the unloaded screw surface, whereas the other 2/3 were surrounded by mesenchymal tissue. At distance of the implant, bone underwent important remodeling. No direct screw-bone contact was found around the loaded screw. Bone apposition and resorption were visible at distance of the screw, respectively on its traction and compression sides. In this preliminary study, osseointegration of the unloaded screw appeared more successful than that of the loaded ones. Further studies should be conducted during a longer follow-up period in order to define the degree of minimal osseointegration associated with an efficient anchorage
Dentofacial effects of bone-anchored maxillary protraction: A controlled study of consecutively treated Class III patients
In this cephalometric investigation, we analyzed the treatment effects of bone-anchored maxillary protraction (BAMP) with miniplates in the maxilla and mandible connected by Class III elastics in patients with Class III malocclusion
Dentofacial effects of bone-anchored maxillary protraction: a controlled study of consecutively treated Class III patients
Three-dimensional assessment of mandibular and glenoid fossa changes after bone-anchored Class III intermaxillary traction
Conventional treatment for young Class III patients involves extraoral devices designed to either protract the maxilla or restrain mandibular growth. The use of skeletal anchorage offers a promising alternative to obtain orthopedic results with fewer dental compensations. Our aim was to evaluate 3-dimensional changes in the mandibles and the glenoid fossae of Class III patients treated with bone-anchored maxillary protraction
Mandibular and glenoid fossa changes after bone-anchored maxillary protraction therapy in patients with UCLP: A 3-D preliminary assessment
To assess mandibular and glenoid fossa (GF) changes after bone-anchored maxillary protraction (BAMP) therapy in patients with unilateral complete cleft lip and palate (UCLP)
Comparison of two protocols for maxillary protraction: bone anchors versus face mask with rapid maxillary expansion
To test the hypothesis that there is no difference in the active treatment effects for maxillary advancement induced by bone-anchored maxillary protraction (BAMP) and the active treatment effects for face mask in association with rapid maxillary expansion (RME/FM)
Use of shape correspondence analysis to quantify skeletal changes associated with bone-anchored Class III correction
To evaluate the three-dimensional (3D) skeletal changes in the mandibles of Class III patients treated with bone-anchored maxillary protraction using shape correspondence analysis
Bone-anchored maxillary protraction therapy in patients with unilateral complete cleft lip and palate: 3-dimensional assessment of maxillary effects
The aim of this study was to 3-dimensionally assess the treatment outcomes of bone-anchored maxillary protraction (BAMP) in patients with unilateral cleft lip and palate
Three-dimensional assessment of maxillary changes associated with bone anchored maxillary protraction
Bone-anchored maxillary protraction has been shown to be an effective treatment modality for the correction of Class III malocclusions. The purpose of this study was to evaluate 3-dimensional changes in the maxilla, the surrounding hard and soft tissues, and the circummaxillary sutures after bone-anchored maxillary protraction treatment
Orthopedic Traction of the Maxilla With Miniplates: A New Perspective for Treatment of Midface Deficiency
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