Changes in occlusal function after extraction of premolars: 2-year follow-up.
Abstract OBJECTIVE: To determine the effects of extraction and the number of teeth extracted on changes in occlusal function by measuring occlusal contact area and force before and after orthodontic treatment with a fixed appliance. MATERIALS AND METHODS: Female patients treated with a fixed appliance were divided into nonextraction (n = 36), two maxillary premolar extraction (n = 31), and four premolar extraction (n = 18) groups. Bite pressure-sensitive films were used to analyze the occlusal contact area and force. Measurements were performed before treatment (Pre-Tx), immediately afterward (After-Tx), and ...
Source: The Angle Orthodontist - May 9, 2017 Category: Dentistry Authors: Yoon W, Hwang S, Chung C, Kim KH Tags: Angle Orthod Source Type: research

Confocal microscope analysis of depth of etch between self-limiting and traditional etchant systems.
CONCLUSION: The etch depth of the self-limiting etchant was consistently less than the standard etchant. Both types of etchant etched deeper after 30 seconds, but the depth of etch at 120 seconds was not different than at 60 seconds, indicating that both etchants are somewhat self-limiting in depth. Therefore, there is no advantage to using the self-limiting etchant. PMID: 28481629 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - May 8, 2017 Category: Dentistry Authors: Wilson SM, Lien W, Lee DP, Dunn WJ Tags: Angle Orthod Source Type: research

Changes in the buccolingual inclination of first molars with growth in untreated subjects: A longitudinal study.
CONCLUSIONS: Maxillary molars erupted with buccal crown inclination at age 6 in both boys and girls and uprighted lingually with growth. At age 16, maxillary molars were not completely upright but rather maintained some buccal crown inclination. Mandibular molars erupted with lingual crown inclination at age 6 and uprighted buccally with age. At age 16, mandibular molars were not completely upright but rather maintained some lingual inclination. PMID: 28481630 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - May 8, 2017 Category: Dentistry Authors: Sayania B, Merchant M, Josephs P, Chung CH Tags: Angle Orthod Source Type: research

Salivary leptin levels in normal weight and overweight individuals and their correlation with orthodontic tooth movement.
CONCLUSIONS: Overweight individuals had greater salivary leptin concentration. There was a positive correlation between salivary leptin concentration and rate of tooth movement in both normal and overweight individuals. The rate of tooth movement is decreased in overweight individuals as compared with normal weight individuals. PMID: 28471265 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - May 4, 2017 Category: Dentistry Authors: Jayachandran T, Srinivasan B, Padmanabhan S Tags: Angle Orthod Source Type: research

Ectopic eruption of the maxillary second molar: Predictive factors.
CONCLUSIONS: An increase in arch length, decrease in ANB angle, and decrease in maxillary tuberosity distance to the distal aspect of the maxillary first molar (PTV-M1) were the most predictive factors associated with ectopic eruption of maxillary second molars. PMID: 28467167 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - May 3, 2017 Category: Dentistry Authors: Hwang S, Choi YJ, Lee JY, Chung C, Kim KH Tags: Angle Orthod Source Type: research

Low-intensity pulsed ultrasound reduces periodontal atrophy in occlusal hypofunctional teeth.
CONCLUSION: LIPUS exposure reduced the atrophic changes of alveolar bone by inducing the upregulation of periostin and CTGF expression to promote PDL healing after induction of occlusal hypofunction. PMID: 28463085 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - May 2, 2017 Category: Dentistry Authors: Kasahara Y, Usumi-Fujita R, Hosomichi J, Kaneko S, Ishida Y, Shibutani N, Shimizu Y, Okito A, Oishi S, Kuma Y, Yamaguchi H, Ono T Tags: Angle Orthod Source Type: research

Chin-throat anatomy: Normal relations and changes following orthognathic surgery and growth modification.
Abstract OBJECTIVES: To determine if a new facial line (T), tangent to the throat, intersects the mandibular border in anterior (ANT) and posterior (POST) parts in proportions varying with facial configuration, and to evaluate the association between chin projection and throat inclination and the potential for the T-line to reflect this association. MATERIALS AND METHODS: Measurements on profile photographs and cephalograms of 135 adults (aged 18-50 years)-45 each of Class I, II, and III (CI, CII, CIII) malocclusions-included ANT and POST, chin-throat (CTA), and mento-cervical (MCA) angles. Pre- and posttreat...
Source: The Angle Orthodontist - May 1, 2017 Category: Dentistry Authors: Haddad RV, Ghafari JG Tags: Angle Orthod Source Type: research

A validation study of reconstructed rapid prototyping models produced by two technologies.
Abstract OBJECTIVE: To determine the accuracy (trueness and precision) of two different rapid prototyping (RP) techniques for the physical reproduction of three-dimensional (3D) digital orthodontic study casts, a comparative assessment using two 3D STL files of two different maxillary dentitions (two cases) as a reference was accomplished. MATERIALS AND METHODS: Five RP replicas per case were fabricated using both stereolithography (SLA) and the PolyJet system. The 20 reproduced casts were digitized with a highly accurate reference scanner, and surface superimpositions were performed. Precision was measured b...
Source: The Angle Orthodontist - May 1, 2017 Category: Dentistry Authors: Dietrich CA, Ender A, Baumgartner S, Mehl A Tags: Angle Orthod Source Type: research

Letters From Our Readers.
ve; V PMID: 28426323 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - April 22, 2017 Category: Dentistry Authors: Rongo R, Valletta R, Bucci R, Rivieccio V, Galeotti A, Michelotti A, D'Antò V Tags: Angle Orthod Source Type: research

Letters From Our Readers.
PMID: 28426324 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - April 22, 2017 Category: Dentistry Authors: Freitas MPM Tags: Angle Orthod Source Type: research

Letters From Our Readers.
PMID: 28426325 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - April 22, 2017 Category: Dentistry Authors: Ganzer N, Feldmann I, Bondemark L Tags: Angle Orthod Source Type: research

Letters From Our Readers.
PMID: 28426327 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - April 22, 2017 Category: Dentistry Authors: Abdelkader HM, Ammar AS, Sharafeldin A Tags: Angle Orthod Source Type: research

Fast Food or Slow Food Orthodontics? Part 2.
PMID: 28426328 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - April 22, 2017 Category: Dentistry Authors: Melsen B Tags: Angle Orthod Source Type: research

Three-dimensional analysis of upper airway morphology in skeletal Class III patients with and without mandibular asymmetry.
Abstract OBJECTIVE: To compare the three-dimensional (3D) morphology of the upper airway in skeletal Class III patients with and without mandibular asymmetry and to investigate the possible underlying correlations between the morphology of the upper airway and mandibular deviation. MATERIALS AND METHODS: Cone-beam computed tomography images of 54 subjects with skeletal Class III malocclusion (ANB angle ≤ 0.4°, Wits ≤ -5.5°) were taken and 3D upper airway models were reconstructed using Dolphin 3D software. According to the distance (d) from symphysis menti to the sagittal plane, all subjects wer...
Source: The Angle Orthodontist - April 18, 2017 Category: Dentistry Authors: Wen X, Wang X, Qin S, Franchi L, Gu Y Tags: Angle Orthod Source Type: research

Cementogenesis is inhibited under a mechanical static compressive force via Piezo1.
CONCLUSIONS: Cementogenic activity was inhibited in OCCM-30 cells under static mechanical force, a process that was partially mediated by the decrease of Piezo1. This study provides a new viewpoint of the pathogenesis mechanism of orthodontically induced root resorption and repair. PMID: 28418701 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - April 18, 2017 Category: Dentistry Authors: Zhang YY, Huang YP, Zhao HX, Zhang T, Chen F, Liu Y Tags: Angle Orthod Source Type: research

Effects of skeletally anchored Class II elastics: A pilot study and new approach for treating Class II malocclusion.
Abstract OBJECTIVE: To evaluate the skeletal, dentoalveolar, and soft tissue effects of skeletally anchored Class II elastics and compare them with a matched control group treated by a monobloc appliance for the correction of skeletal Class II malocclusion due to mandibular retrusion. MATERIALS AND METHODS: Twelve patients (6 girls, 6 boys) were randomly divided into two groups. In the elastics group, six patients (12.9 ± 1.5 years of age; 3 boys, 3 girls) were treated with skeletally anchored Class II elastics. Two miniplates were placed bilaterally at the ramus of the mandible and the other two minip...
Source: The Angle Orthodontist - April 12, 2017 Category: Dentistry Authors: Ozbilek S, Gungor AY, Celik S Tags: Angle Orthod Source Type: research

Buccolingual inclination of first molars in untreated adults: A CBCT study.
CONCLUSIONS: There is a curvature to the inclinations of first molars in untreated adults, where the maxillary molars have a slight buccal inclination and mandibular molars have a slight lingual inclination. PMID: 28375034 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - April 4, 2017 Category: Dentistry Authors: Alkhatib R, Chung CH Tags: Angle Orthod Source Type: research

Treatment of vertical maxillary excess without open bite in a skeletal Class II hyperdivergent patient.
Abstract A 20-year-old woman visited the office complaining of a gummy smile and lip protrusion. She was diagnosed with vertical maxillary excess without open bite and skeletal Class II hyperdivergent pattern. She refused the surgical-orthodontic treatment option, although she wanted to correct the gummy smile and retruded chin. Differential intrusion of anterior and posterior teeth in both arches was necessary to maximize the skeletal treatment effects. In the maxilla, one palatal temporary anchorage device (TAD), an archwire with an accentuated curve of Spee, and a transpalatal arch were applied. In the mandible...
Source: The Angle Orthodontist - March 20, 2017 Category: Dentistry Authors: Paik CH, Park HS, Ahn HW Tags: Angle Orthod Source Type: research

Evidence favoring a secular reduction in mandibular leeway space.
CONCLUSION: Results suggest that mandibular leeway space is decreasing in 21st century American whites and may present a challenge to orthodontists in managing tooth size-arch length discrepancies. PMID: 28318312 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - March 20, 2017 Category: Dentistry Authors: Allen TR, Trojan TM, Harris EF Tags: Angle Orthod Source Type: research

Letters From Our Readers.
PMID: 28253450 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - March 1, 2017 Category: Dentistry Authors: Yi J Tags: Angle Orthod Source Type: research

Fast Food or Slow Food Orthodontics?
PMID: 28253451 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - March 1, 2017 Category: Dentistry Authors: Melsen B Tags: Angle Orthod Source Type: research

Letters From Our Readers.
ot-Arcís C PMID: 28253452 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - March 1, 2017 Category: Dentistry Authors: de Bernabé PG, Montiel-Company JM, Paredes-Gallardo V, Gandía-Franco JL, Bellot-Arcís C Tags: Angle Orthod Source Type: research

Cone-beam computed tomography evaluation on the changes in condylar long axis according to asymmetric setback in sagittal split ramus osteotomy patients.
Abstract OBJECTIVE: To determine whether the condylar rotation is affected by asymmetric setback in patients undergoing sagittal split ramus osteotomy. MATERIALS AND METHODS: Thirty patients who underwent bilateral sagittal split ramus osteotomy setback surgery were divided into the two groups, symmetric setback and asymmetric setback, according to the right/left difference of setback amount (
Source: The Angle Orthodontist - March 1, 2017 Category: Dentistry Authors: Lim SY, Jiang T, Oh MH, Kook MS, Cho JH, Hwang HS Tags: Angle Orthod Source Type: research

Types of tooth movement, bodily or tipping, do not affect the displacement of the tooth's center of resistance but do affect the alveolar bone resorption.
CONCLUSIONS: Displacement of the center of resistance was not influenced by the types of tooth movement. However, volume of cervical alveolar bone resorption was greater in the tipping movement group than in the bodily movement group. PMID: 28206811 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - February 16, 2017 Category: Dentistry Authors: Kondo T, Hotokezaka H, Hamanaka R, Hashimoto M, Nakano-Tajima T, Arita K, Kurohama T, Ino A, Tominaga JY, Yoshida N Tags: Angle Orthod Source Type: research

Incisor and molar overjet, arch contraction, and molar relationship in the mixed dentition in repaired complete unilateral cleft lip and palate: A qualitative and quantitative appraisal.
CONCLUSIONS: Cleft side maxillary arch contraction was most severe in the deciduous canine and first deciduous molar region and progressively less severe in the posterior region of the arch. A greater frequency and severity of negative overjet and Class II molar relationship was seen on the cleft side. PMID: 28195497 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - February 14, 2017 Category: Dentistry Authors: Disthaporn S, Suri S, Ross B, Tompson B, Baena D, Fisher D, Lou W Tags: Angle Orthod Source Type: research

Forces and moments delivered by the PET-G aligner to a maxillary central incisor for palatal tipping and intrusion.
Abstract OBJECTIVE: To evaluate the effect of material thickness and width of the gingival edge on the forces and moments delivered by aligners prepared from Duran foil (PET-G) to a maxillary incisor during tipping and intrusion. MATERIALS AND METHODS: Aligners prepared from PET-G of three material thicknesses (0.5, 0.625, and 0.75 mm) and three widths of gingival edges (0-1, 3-4, and 6-7 mm) were investigated during incisor palatal tipping and intrusion of 0.5 mm each. Forces and moments were measured with a six-component measuring device. The influence of aligner thickness and aligner extend on the force an...
Source: The Angle Orthodontist - February 6, 2017 Category: Dentistry Authors: Gao L, Wichelhaus A Tags: Angle Orthod Source Type: research

Morphological relationship analysis of impacted maxillary canines and the adjacent teeth on 3-dimensional reconstructed CT images.
In this study, we selected only patients with unilateral maxillary canine impaction to compare the morphologic characteristics of the dentition on the impaction side and the clinically normal eruption side. The sample size was decided to be 40 based on the pilot study. To minimize bias depending on sex and location of the maxillary canine impaction, we selected equal numbers (20) of boys and girls, and equal cases (20) of buccal impaction and palatal impaction. Under the aforementioned conditions, the mean age was 13.5 ± 2.3 years. The multislice spiral computed tomography images of these 40 subjects were converted ...
Source: The Angle Orthodontist - February 3, 2017 Category: Dentistry Authors: Kim Y, Hyun HK, Jang KT Tags: Angle Orthod Source Type: research

Changes in pharyngeal airway dimensions and hyoid bone position after maxillary protraction with different alternate rapid maxillary expansion and construction protocols: A prospective clinical study.
In this study, 4 angular and 13 linear measurements were performed to evaluate the skeletal and pharyngeal airway changes that occurred after maxillary protraction. RESULTS: A significant increase in the maxillary growth, inhabitation of mandibular growth, and clockwise rotation of the mandible caused the improvement of the maxillo-mandibular relationship in both groups. Those changes caused a significant increase in the upper pharyngeal airway dimension (P
Source: The Angle Orthodontist - January 31, 2017 Category: Dentistry Authors: Celikoglu M, Buyukcavus MH Tags: Angle Orthod Source Type: research

Twin Block appliance with acrylic capping does not have a significant inhibitory effect on lower incisor proclination.
Abstract OBJECTIVE: To investigate the effect of acrylic capping, treatment duration, overjet, and lower incisor inclination on the posttreatment tooth position in patients treated with 2 Twin Block (TB) appliance versions. MATERIALS AND METHODS: Cephalograms of 56 patients with Class II malocclusion (21 boys, 35 girls; mean age before treatment [T1] = 12.5 years; standard deviation, 0.7) treated with a TB appliance with either acrylic capping or ball-ended clasps on lower incisors were retrospectively collected and traced. Lower incisor inclination (L1-GoGn, L1-GoMe, L1-MP) was measured at T1 and after TB ap...
Source: The Angle Orthodontist - January 27, 2017 Category: Dentistry Authors: van der Plas MC, Janssen KI, Pandis N, Livas C Tags: Angle Orthod Source Type: research

Herbst appliance effects on pharyngeal airway ventilation evaluated using computational fluid dynamics.
CONCLUSION: The Herbst appliance improves ventilation of the oropharyngeal and laryngopharyngeal airways. These results may provide a useful assessment of obstructive sleep apnea treatment during growth. PMID: 28121164 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - January 25, 2017 Category: Dentistry Authors: Iwasaki T, Sato H, Suga H, Minami A, Yamamoto Y, Takemoto Y, Inada E, Saitoh I, Kakuno E, Kanomi R, Yamasaki Y Tags: Angle Orthod Source Type: research

Mode of correction is related to treatment timing in Class II patients treated with the mandibular advancement locking unit (MALU) appliance.
CONCLUSIONS: Treatment initiated before or during PGP seems to result in a more favorable SNA/SNB relationship and less tipping of the mandibular incisors than when treatment is initiated after PGP. PMID: 28121165 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - January 25, 2017 Category: Dentistry Authors: Candir M, Kerosuo H Tags: Angle Orthod Source Type: research

Twitter analysis of the orthodontic patient experience with braces vs Invisalign.
CONCLUSION: Twitter users expressed more positive than negative sentiment about orthodontic treatment with no significant difference in sentiment between braces and Invisalign tweets. PMID: 28059576 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - January 6, 2017 Category: Dentistry Authors: Noll D, Mahon B, Shroff B, Carrico C, Lindauer SJ Tags: Angle Orthod Source Type: research

Efficacy of auxiliary devices for removal of fluorescent residue after bracket debonding.
CONCLUSION: Auxiliary devices were useful for removal of fluorescent residue after bracket debonding. PMID: 28035838 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 30, 2016 Category: Dentistry Authors: Rocha RS, Salomão FM, Silveira Machado L, Sundfeld RH, Fagundes TC Tags: Angle Orthod Source Type: research

Pain and discomfort during the first week of rapid maxillary expansion (RME) using two different RME appliances: A randomized controlled trial.
CONCLUSIONS: Both tooth-borne and tooth-bone-borne RME were generally well tolerated by the patients during the first week of treatment. PMID: 28029266 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 28, 2016 Category: Dentistry Authors: Feldmann I, Bazargani F Tags: Angle Orthod Source Type: research

Cementocyte cell death occurs in rat cellular cementum during orthodontic tooth movement.
CONCLUSION: Cementocytes adjacent to the hyalinized tissue underwent apoptotic cell death during orthodontic tooth movement, which might have been associated with subsequent root resorption. PMID: 27905816 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - December 1, 2016 Category: Dentistry Authors: Matsuzawa H, Toriya N, Nakao Y, Konno-Nagasaka M, Arakawa T, Okayama M, Mizoguchi I Tags: Angle Orthod Source Type: research

Treatment management between orthodontists and general practitioners performing clear aligner therapy.
Abstract OBJECTIVE: To investigate differences in case selection, treatment management, and aligner treatment expertise between orthodontists and general practitioners. MATERIALS AND METHODS: A parallel pair of original surveys with three sections (case selection, treatment management, and demographics) was sent to orthodontists (N = 1000) and general dentists (N = 1000) who were providers of aligner treatment. RESULTS: Orthodontists had treated significantly more patients with aligners, had treated more patients with aligners in the previous 12 months, and had received more aligner training than general dentists (P
Source: The Angle Orthodontist - November 22, 2016 Category: Dentistry Authors: Best AD, Shroff B, Carrico CK, Lindauer SJ Tags: Angle Orthod Source Type: research

The effect of root and bone visualization on perceptions of the quality of orthodontic treatment simulations.
BE Abstract OBJECTIVE: To evaluate the effect of root and bone visibility on orthodontists' perceptions of the quality of treatment simulations. MATERIAL AND METHODS: An online survey was used to present orthodontists with setups generated for 10 patients in two different types of view: with and without bone and roots as modeled from a cone-beam computed tomography (CBCT) scan. The orthodontists were asked to rate the quality of the setups from poor to ideal on a 100-point visual analog scale and, if applicable, to identify features of concern that led them to giving a setup a less-than-ideal rating. RE...
Source: The Angle Orthodontist - November 22, 2016 Category: Dentistry Authors: Grünheid T, Kirk DC, Larson BE Tags: Angle Orthod Source Type: research

Low-level laser therapy effectiveness in accelerating orthodontic tooth movement: A randomized controlled clinical trial.
Abstract OBJECTIVE: To evaluate the effectiveness of low-level laser therapy (LLLT) in accelerating orthodontic tooth movement of crowded maxillary incisors. MATERIALS AND METHODS: This two-arm, parallel-group, randomized controlled trial involved 26 patients with severe to extreme maxillary incisors irregularity according to Little's irregularity index, indicating two first premolars extraction. Patients were randomly assigned to either the laser group or the control group (13 each). Following premolars extraction, orthodontic treatment with fixed appliances was initiated for both groups. Immediately after i...
Source: The Angle Orthodontist - November 21, 2016 Category: Dentistry Authors: AlSayed Hasan MM, Sultan K, Hamadah O Tags: Angle Orthod Source Type: research

Streptococcus mutans adhesion on nickel titanium (NiTi) and copper-NiTi archwires: A comparative prospective clinical study.
CONCLUSIONS: S mutans adhesion, surface roughness, and surface free energy were greater in Cu-NiTi than NiTi archwires. Surface roughness and surface free energy increased after 4 weeks of intraoral exposure for all of the archwires studied. A predominantly negative correlation was seen between the cycle threshold value of adherent bacteria and surface characteristics. PMID: 27849122 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 16, 2016 Category: Dentistry Authors: Abraham KS, Jagdish N, Kailasam V, Padmanabhan S Tags: Angle Orthod Source Type: research

Microbial evaluation of the effectiveness of different methods for cleansing clear orthodontic retainers: A randomized clinical trial.
CONCLUSIONS: Using chemical cleansing tablets after mechanical cleansing did not significantly reduce the bacterial count in Essix retainers when compared to use of mechanical cleansing alone. However, the tablets seem to be effective against "cocci" bacterial species. PMID: 27845562 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 15, 2016 Category: Dentistry Authors: Albanna RH, Farawanah HM, Aldrees AM Tags: Angle Orthod Source Type: research

Initial forces experienced by the anterior and posterior teeth during dental-anchored or skeletal-anchored en masse retraction in vitro.
Abstract OBJECTIVE: To investigate initial forces acting on teeth around the arch during en masse retraction using an in vitro Orthodontic SIMulator (OSIM). MATERIALS AND METHODS: The OSIM was used to represent the full maxillary arch in a case wherein both first premolars had been extracted. Dental and skeletal anchorage to a posted archwire and skeletal anchorage to a 10-mm power arm were all simulated. A 0.019 × 0.025-inch stainless steel archwire was used in all cases, and 15-mm light nickel-titanium springs were activated to approximately 150 g on both sides of the arch. A sample size of n = 40 spr...
Source: The Angle Orthodontist - November 10, 2016 Category: Dentistry Authors: Lee D, Heo G, El-Bialy T, Carey JP, Major PW, Romanyk DL Tags: Angle Orthod Source Type: research

Quantification of the force systems delivered by transpalatal arches activated in the six Burstone geometries.
CONCLUSION: The first-order activations of the TPA can deliver predictable force systems in respect to the direction of forces and moments attainable, but some unexpected forces and moments are also produced. Careful clinical monitoring is, therefore, strongly recommended when using this statically indeterminate system. PMID: 27824255 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 8, 2016 Category: Dentistry Authors: Sakima MT, Dalstra M, Loiola AV, Gameiro GH Tags: Angle Orthod Source Type: research

Reliability of clinical crown center to predict marginal ridge leveling.
Abstract OBJECTIVE: To evaluate the null hypothesis that there is no difference between the vertical compensation necessary to level the clinical crown centers and that required to level the marginal ridges. MATERIALS AND METHODS: Initial dental casts selected from 200 patients that met the selection criteria were included. The vertical position of the clinical crown center (VPCC) and marginal ridge (VPMR) of posterior teeth were measured in both arches using a digital height gauge with 0.01mm precision. The vertical discrepancy between the clinical crown centers (VDCC) and marginal ridges (VDMR) of adjacent ...
Source: The Angle Orthodontist - November 8, 2016 Category: Dentistry Authors: Barros SE, Ficht D, Janson G, Chiqueto K, Ferreira E Tags: Angle Orthod Source Type: research

Cone-beam computed tomography versus periapical radiograph for diagnosing external root resorption: A systematic review and meta-analysis.
CONCLUSIONS: Currently available evidence suggests that CBCT could be reliable to detect the presence of ERR in clinical practice and has a higher diagnostic efficacy than PR. PMID: 27813424 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 4, 2016 Category: Dentistry Authors: Yi J, Sun Y, Li Y, Li C, Li X, Zhao Z Tags: Angle Orthod Source Type: research

Predictive factors of sagittal stability after treatment of Class II malocclusions.
CONCLUSIONS:   There is currently limited evidence to support the influence of factors predictive of sagittal stability following Class II malocclusion treatment. More high-quality prospective studies are needed, and functional factors possibly affecting relapse also need to be further assessed. PMID: 26618887 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 1, 2016 Category: Dentistry Authors: Wins SM, Antonarakis GS, Kiliaridis S Tags: Angle Orthod Source Type: research

Changes in the oropharyngeal airway of Class II patients treated with the mandibular anterior repositioning appliance.
CONCLUSIONS:  Functional appliance therapy increases oropharyngeal airway volume, airway dimensions, and anteroposterior hyoid bone position in growing patients. PMID: 26649978 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 1, 2016 Category: Dentistry Authors: Rizk S, Kulbersh VP, Al-Qawasmi R Tags: Angle Orthod Source Type: research

Bond strength and interfacial morphology of orthodontic brackets bonded to eroded enamel treated with calcium silicate-sodium phosphate salts or resin infiltration.
CONCLUSIONS:  Using CSP or resin infiltration before orthodontic bonding does not jeopardize the bonding quality. The orthodontic bonding should be performed shortly after the resin infiltration. PMID: 26998810 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 1, 2016 Category: Dentistry Authors: Costenoble A, Vennat E, Attal JP, Dursun E Tags: Angle Orthod Source Type: research

Evaluation of mandibular volume classified by vertical skeletal dimensions with cone-beam computed tomography.
Abstract OBJECTIVE:  To investigate the relationship between anteroposterior and vertical differences in maxillofacial morphology and mandibular volume. MATERIALS AND METHODS:  Subjects comprised 213 Japanese adults (84 males and 129 females) who were divided into three groups based on mandibular basal arch (ANB) and Wits, measured in a cephalometric analysis: Class I (-1° ≤ ANB
Source: The Angle Orthodontist - November 1, 2016 Category: Dentistry Authors: Nakawaki T, Yamaguchi T, Tomita D, Hikita Y, Adel M, Katayama K, Maki K Tags: Angle Orthod Source Type: research

Reproducibility and reliability of three-dimensional soft tissue landmark identification using three-dimensional stereophotogrammetry.
Abstract OBJECTIVE: To evaluate the intraexaminer repeatability and interexaminer reproducibility of soft tissue landmarks on three-dimensional (3-D) stereophogrammetric images. MATERIALS AND METHODS: Thirty-four stereophotogrammetric images were taken and 19 soft tissue points were identified. The images were obtained using the 3-DMD Face (3-DMD TM Ltd, Atlanta, Ga) system. Two examiners marked 34 images manually with a mouse-driven cursor 4 weeks apart. Intraexaminer marking differences were calculated and classified as 1 mm. Intraclass correlation coefficients were calculated for intraexaminer reliability....
Source: The Angle Orthodontist - November 1, 2016 Category: Dentistry Authors: Baysal A, Sahan AO, Ozturk MA, Uysal T Tags: Angle Orthod Source Type: research

Facial soft-tissue changes after rapid maxillary expansion analyzed with 3-dimensional stereophotogrammetry: A randomized, controlled clinical trial.
CONCLUSIONS:  Soft tissue changes between groups were similar, except for the alar base, which became wider in the treatment group. Weak correlations were found between the skeletal and soft tissue changes. PMID: 27058647 [PubMed - in process] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - November 1, 2016 Category: Dentistry Authors: Baysal A, Ozturk MA, Sahan AO, Uysal T Tags: Angle Orthod Source Type: research