Objective: The purpose of this study was to evaluate the influence of the inter-radicular septum width in the insertion site of self-drilling mini-implants on the stability degree of these anchorage devices. Methods: The sample consisted of 40 mini-implants inserted in the inter-radicular septum between maxillary second premolars and first molars in 21 patients to provide skeletal anchorage for...

miniscrews reportedly have failure rates as high as 10-30%.1-4 Miniscrew loosening or tipping can result from any of the following factors: • Insufficient bone quantity or quality at the insertion site.5-7 • Use of a screw of inadequate diameter or length.3,8-10 • Inappropriate intraosseous design.10-12 • Root contact during insertion.13 • Manipulation by the patient’s fingers or tongue.8 • Poo...

Class III malocclusions can be treated with orthopedic, camouflage, or orthognathic surgical methods, depending on the severity of problem. This case report describes non-surgical correction a problem using buccal shelf miniscrew. In 15-year-old female patient, bilateral 2x12 mm stainless steel screws were inserted into mandible to distalize lower teeth. A power chain from miniscrews was applie...

OBJECTIVE To (1) evaluate the stability of palatal rugae as landmarks for superimposition of dental casts and (2) establish a three-dimensional superimposition method of maxillary dental casts for analyzing orthodontic tooth movement. MATERIALS AND METHODS The sample consisted of dental casts obtained from 10 patients treated with extraction of bilateral maxillary first premolars and placemen...

The aim of this study was to investigate, over a period of approximately 3 years, the reactions to orthodontic loading of a type V titanium miniscrew. In this retrospective study, conducted in a private practice, the records of 300 miniscrews inserted in 132 consecutive patients (80 females, 60.6 percent) by the same surgeon were evaluated. The mean age of the patients was 23.2 years. Three typ...

OBJECTIVE To elucidate relationships between the dental roots and surrounding tissues in order to prevent complications after placement of a miniscrew. MATERIALS AND METHODS Twenty human mandibles and maxillas were used for this study. In the 200 sections of each mandible and maxilla, nine items were measured to investigate the relationships between the dental roots. RESULTS The interroot d...

BACKGROUND Overeruption of an upper molar following loss of the opposing tooth is a common clinical finding. Rehabilitation can be difficult when the interocclusal space is reduced. AIM To intrude an overerupted upper first molar and replace the missing lower first molar. METHODS Buccal and palatal microscrews and a transpalatal bar were placed. The palatal miniscrew loosened shortly after ...

orthodontic miniscrews are widely used as temporary anchorage devices to facilitate orthodontic movements. miniscrew loosening is a common problem, which usually occurs during the first two weeks of treatment. macrodesign can affect the stability of a miniscrew by changing its diameter, length, thread pitch, thread shape, tapering angle and so on. in this study, a 3-d finite element analysis wa...

The aim of this study was to investigate potential occurrence of bacteremia in orthodontic patients after removal of miniscrews.The study group comprised 30 healthy subjects (17 males, 13 females) with a mean age of 24.1 years treated with self-ligating fixed appliances and mini-implant anchorage. Two 20 ml venous blood samples were obtained prior to and 30-60 seconds after miniscrew explantati...

Abstract The present article reports the successful non-extraction orthodontic treatment using miniscrew anchorage in a patient who presented with maxillary left central incisor loss and unstable jaw movements. chief complaints of 23-year-old female were her protruding teeth crowding mandibular anterior segment. lost as result traumatic injury during childhood. However, crown was saved attached...