Three-dimensional changes of the hyoid bone and airway volumes related to its relationship with horizontal anatomic planes after bimaxillary surgery in skeletal Class III patients.
Abstract Abstract Objective: To evaluate longitudinal changes of the hyoid bone position and pharyngeal airway space after bimaxillary surgery in mandibular prognathism patients. Materials and Methods: Cone-beam computed tomography scans were taken for 25 mandibular prognathism patients before surgery (T0), 2 months after surgery (T1), and 6 months after surgery (T2). The positional displacement of the hyoid bone was assessed using the coordinates at T0, T1, and T2. Additionally, the volume of each subject's pharyngeal airway was measured. Results: The mean amount of posterior maxilla impactio...
Source: The Angle Orthodontist - January 11, 2013 Category: Dentistry Authors: Kim MA, Kim BR, Choi JY, Youn JK, Kim YJ, Park YH Tags: Angle Orthod Source Type: research

Eruption of the permanent maxillary canines in relation to mandibular second molar maturity.
Conclusions: Irrespective of sex, growth phase, and facial features, the maturational stage of the mandibular second molar may be a reliable indicator for the timing of spontaneous eruption of the maxillary canine. PMID: 23301999 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - January 9, 2013 Category: Dentistry Authors: Perinetti G, Callovi M, Salgarello S, Biasotto M, Contardo L Tags: Angle Orthod Source Type: research

Prevalence of white spot lesion formation during orthodontic treatment.
Abstract Abstract Purpose: To quantify the prevalence of white spot lesions (WSLs) on the anterior teeth and, secondarily, to evaluate risk factors and predictors. Materials and Methods: Digital photographs and records of 885 randomly chosen patients were evaluated before and after treatment. Chart information included gender, age, as well as banding and debanding dates. Fluorosis and oral hygiene before and after treatment were also evaluated. Preexisting and posttreatment WSLs were recorded and compared for all 12 anterior teeth. Risk ratios (RR) and absolute risk (AR) were calculated to determine the lik...
Source: The Angle Orthodontist - January 4, 2013 Category: Dentistry Authors: Julien KC, Buschang PH, Campbell PM Tags: Angle Orthod Source Type: research

Deglutitive tongue movement after correction of mandibular protrusion.
Conclusion: Our findings suggest that tongue-palate contact and tongue-tip position during deglutition adapted to the corrected oral and maxillofacial morphology, but the anterior and middorsal regions of the tongue during deglutition may have been affected by pharyngeal constrictors rather than by the oral and maxillofacial morphology. PMID: 23289734 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - January 4, 2013 Category: Dentistry Authors: Fujiki T, Deguchi T, Nagasaki T, Tanimoto K, Yamashiro T, Takano-Yamamoto T Tags: Angle Orthod Source Type: research

Dr G Herbert Hanson In Memory - An appreciation.
Dr G Herbert Hanson In Memory - An appreciation. Angle Orthod. 2013 Jan;83(1):183 Authors: Rossouw E PMID: 23273332 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - January 1, 2013 Category: Dentistry Authors: Rossouw E Tags: Angle Orthod Source Type: research

Academic orthodontic opportunities.
Authors: PMID: 23273333 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - January 1, 2013 Category: Dentistry Tags: Angle Orthod Source Type: research

Long-term therapeutic efficacy of oral appliances in treatment of obstructive sleep apnea-hypopnea syndrome.
Conclusion: OAs provided effective and safe long-term therapy for patients with OSAHS. Follow-up supervision is recommended since long-term alterations take place, although these appear to be minimal. PMID: 23270383 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 27, 2012 Category: Dentistry Authors: Gong X, Zhang J, Zhao Y, Gao X Tags: Angle Orthod Source Type: research

Quantitative analysis of mechanically retentive ceramic bracket base surfaces with a three-dimensional imaging system.
Conclusion: Irregular bracket surface features showed the highest surface roughness values and unit bracket base surface area among ceramic brackets, which contributes to increased mechanically retentive bracket bonding strength. PMID: 23270384 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 27, 2012 Category: Dentistry Authors: Kang DY, Choi SH, Cha JY, Hwang CJ Tags: Angle Orthod Source Type: research

Labio-lingual root control of lower anterior teeth and canines obtained by active and passive self-ligating brackets.
Conclusions: A significant proclination was seen for the mandibular front teeth; the claimed third-order torque control of SL systems could not be demonstrated. Therefore, a considerable play between the wire and the brackets could be hypothesized, even more in relation to the passive than the active SL brackets. PMID: 23249256 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 18, 2012 Category: Dentistry Authors: Cattaneo PM, Salih RA, Melsen B Tags: Angle Orthod Source Type: research

Effects of repeated sterilization cycles on primary stability of orthodontic mini-screws.
Abstract Abstract Objective: To determine if repeated sterilization has deleterious effects on the clinical stability of mini-screws. Materials and Methods: Thirty each of the following mini-screws were tested: Aarhus (American Orthodontics, Sheboygan, Wisc), VectorTAS (Ormco Corporation, Orange, Calif), Dual-Top (RMO, Denver, Colo), and Ortho Anchor (KLS Martin, Jacksonville, Fla). Controls were sterilized once using a steam autoclave (Statim 5000, SciCan USA, Canonsburg, Pa). Each group of mini-screws was divided into three groups: the control (n  =  10) and two test groups (n  =  10, each). Test ...
Source: The Angle Orthodontist - December 17, 2012 Category: Dentistry Authors: Akyalcin S, McIver HP, English JD, Ontiveros JC, Gallerano RL Tags: Angle Orthod Source Type: research

Effects of placement angle and direction of orthopedic force application on the stability of orthodontic miniscrews.
Conclusion: Placement of the miniscrew perpendicular to the cortical bone is advantageous in terms of biomechanical stability. Placement angles of less than 60° can reduce the stability of miniscrews when orthopedic forces are applied in various directions. PMID: 23241005 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 14, 2012 Category: Dentistry Authors: Lee J, Kim JY, Choi YJ, Kim KH, Chung CJ Tags: Angle Orthod Source Type: research

Effect of frequent laser irradiation on orthodontic pain.
Conclusions: Frequent LLLT decreased the perception of pain to a nonsignificant level throughout the week after separator placement, compared with pain perception in the placebo and control groups. Therefore, LLLT might be an effective method of reducing orthodontic pain. PMID: 23241006 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 14, 2012 Category: Dentistry Authors: Kim WT, Bayome M, Park JB, Park JH, Baek SH, Kook YA Tags: Angle Orthod Source Type: research

Effectiveness of twin-block and Mandibular Protraction Appliance-IV in the improvement of pharyngeal airway passage dimensions in Class II malocclusion subjects with a retrognathic mandible.
Abstract Abstract Objective: To test the hypothesis that twin-block and Mandibular Protraction Appliance-IV (MPA-IV) are not effective in improving the pharyngeal airway passage (PAP) dimensions among Class II malocclusion subjects with a retrognathic mandible. Materials and Methods: Eighty-three subjects ranging in age from 8 to 14 years were divided into four groups. Group I included 30 Class I malocclusion subjects (healthy controls); group II consisted of 16 Class II malocclusion subjects (Class II controls); group III had 16 subjects in whom Class II malocclusion was treated by MPA-IV; and the rem...
Source: The Angle Orthodontist - December 14, 2012 Category: Dentistry Authors: Jena AK, Singh SP, Utreja AK Tags: Angle Orthod Source Type: research

Effect of placement angle on the stability of loaded titanium microscrews in beagle jaws.
Abstract Abstract Objective: To evaluate the effect of insertion angle on stability of loaded titanium microscrews in beagle jaws. Materials and Methods: Forty-eight microscrews were inserted at four different angles (30°, 50°, 70°, and 90°) into the intraradicular zones of the mandibular first molars and third premolars of 12 beagles and immediately loaded with a force of 2 N for 8 weeks. Microcomputed tomography (micro-CT) and biomechanical pull-out tests were used to assess osseointegration of the interface. Results: All micro-CT parameters and maximum pull-out force (F(MAX)) of ...
Source: The Angle Orthodontist - December 10, 2012 Category: Dentistry Authors: Xu Z, Wu Y, Zhao L, Zhou Y, Wei X, Tang N, Feng X, Tang T, Zhao Z Tags: Angle Orthod Source Type: research

Effects of insertion angle and implant thread type on the fracture properties of orthodontic mini-implants during insertion.
Abstract Abstract Objective: To determine the effects of insertion angle (IA) and thread type on the fracture properties of orthodontic mini-implants (OMIs) during insertion. Materials and Methods: A total of 100 OMIs (self-drilling cylindrical; 11 mm in length) were allocated into 10 groups according to thread type (dual or single) and IA (0°, 8°, 13°, 18°, and 23°) (n  =  10 per group). The OMIs were placed into artificial materials simulating human tissues: two-layer bone blocks (Sawbones), root (polymethylmethacrylate stick), and periodontal ligament (Imprint-II Garant light...
Source: The Angle Orthodontist - December 10, 2012 Category: Dentistry Authors: Cho IS, Kim TW, Ahn SJ, Yang IH, Baek SH Tags: Angle Orthod Source Type: research

Effects of different bleaching methods on shear bond strengths of orthodontic brackets.
Abstract Abstract Objective: To evaluate the effects of different bleaching methods on the shear bond strength (SBS) of orthodontic brackets. Materials and Methods: Forty-five freshly extracted premolars were randomly divided into three groups (n  =  15 per group). In group I, bleaching was performed with the office bleaching method. In group II, bleaching was performed with the home bleaching method. Group III served as the control. Orthodontic brackets were bonded with a light cure composite resin and cured with an LED light. After bonding, the SBS of the brackets were tested with a Universal testing ...
Source: The Angle Orthodontist - December 4, 2012 Category: Dentistry Authors: Gungor AY, Ozcan E, Alkis H, Turkkahraman H Tags: Angle Orthod Source Type: research

Malocclusion impacts adolescents' oral health-related quality of life.
Abstract Abstract Objective: To test the hypothesis that malocclusion does not have an independent and negative effect on quality of life of adolescents. Materials and Methods: The cross-sectional design study comprised a sample of 519 children, aged 11 to 14 years, attending public schools in Osorio, a city in southern Brazil. One calibrated examiner carried out clinical examinations and recorded dental caries (decayed/missing/filled teeth), malocclusion (Dental Aesthetic Index), and dental trauma. Participants completed the Brazilian version of the Child Perceptions Questionnaire (CPQ(11-14)), Impact...
Source: The Angle Orthodontist - December 4, 2012 Category: Dentistry Authors: Scapini A, Feldens CA, Ardenghi TM, Kramer PF Tags: Angle Orthod Source Type: research

Effect of text message follow-up on patient's self-reported level of pain and anxiety.
Conclusions: This study demonstrated that a text message sent from an orthodontic office following initial appliance placement resulted in a lower level of patient's self-reported pain. Additionally, patient anxiety is at its peak the day following the initial appointment and decreases from that point forward. PMID: 23210546 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 4, 2012 Category: Dentistry Authors: Keith DJ, Rinchuse DJ, Kennedy M, Zullo T Tags: Angle Orthod Source Type: research

A comparison of second premolar extraction and mini-implant total arch distalization with interproximal stripping.
Abstract Abstract Objective: The effect of total arch distalization using orthodontic mini-implants (OMIs) combined with interproximal stripping (IPS) and second premolar extraction was investigated in Class I malocclusion patients. Materials and Methods: A total of 66 consecutively treated Class I malocclusion (Class I molar relationship; 0 mm
Source: The Angle Orthodontist - November 30, 2012 Category: Dentistry Authors: Jung MH Tags: Angle Orthod Source Type: research

Mechanism of Class II correction in prepubertal and postpubertal patients with Twin Force Bite Corrector.
Conclusions: There is no difference in overall dentoskeletal effects obtained at the end of treatment by the TFBC appliance in normodivergent prepubertal vs postpubertal patients. However, treatment efficiency based on treatment timing is significantly greater for the postpubertal group. PMID: 23194014 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 29, 2012 Category: Dentistry Authors: Chhibber A, Upadhyay M, Uribe F, Nanda R Tags: Angle Orthod Source Type: research

Satisfaction with orthodontic treatment.
Conclusions: The doctor-patient relationship remains the most important factor contributing to patient satisfaction. However, the results show that, overall, patients are more satisfied with their orthodontic treatment than patients were a decade ago. PMID: 23181757 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 26, 2012 Category: Dentistry Authors: Keles F, Bos A Tags: Angle Orthod Source Type: research

Effectiveness of computer-assisted orthodontic treatment technology to achieve predicted outcomes.
d T Abstract Abstract Objective: To evaluate the effectiveness of computer-assisted orthodontic treatment technology to produce the tooth position prescribed by the virtual treatment plan. Materials and Methods: Posttreatment models of 23 patients treated with SureSmile were digitally superimposed on their corresponding virtual treatment plan models utilizing best-fit surface-based registration. Individual tooth-position discrepancies between virtual treatment plan and actual outcome were computed. Discrepancies less than 0.5 mm in mesial-distal, facial-lingual, and vertical dimensions, and less than 2...
Source: The Angle Orthodontist - November 26, 2012 Category: Dentistry Authors: Larson BE, Vaubel CJ, Grünheid T Tags: Angle Orthod Source Type: research