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Angle Orthodontist

Naif N Almasoud
OBJECTIVE: To determine whether the successful management of palatally displaced permanent canines (PDCs) can be achieved by the interceptive extraction of primary maxillary canines. MATERIALS AND METHODS: Digital databases (Medline, Scopus, Web of Science, and Cochrane) were searched to retrieve articles published from 1952 to April 2016. The university librarian developed search strategies for each database. Two calibrated reviewers independently reviewed potentially related titles and abstracts...
August 11, 2017: Angle Orthodontist
Maria Grazia Piancino, Maria Cordero-Ricardo, Rosangela Cannavale, Teresa Vallelonga, Umberto Garagiola, Andrea Merlo
OBJECTIVE: To evaluate reverse-sequencing chewing cycles (RSCC) and their kinematic parameters on both sides before and after correction with the Function Generating Bite (FGB) appliance. MATERIALS AND METHODS: Forty-seven patients, 8.3 ± 1.1 (mean ± SD) years of age, with unilateral posterior crossbite (35 on the right side, 12 on the left side) and 18 age-matched controls (9.1 ± 0.8 years) were selected for the study from the orthodontic division of the University of Turin, Italy...
August 3, 2017: Angle Orthodontist
David W White, Katie C Julien, Helder Jacob, Phillip M Campbell, Peter H Buschang
OBJECTIVE: To evaluate differences in discomfort levels between patients treated with aligners and traditional fixed orthodontic appliances. MATERIALS AND METHODS: This blinded, prospective, randomized equivalence two-arm parallel trial allocated 41 adult Class I nonextraction patients to either traditional fixed appliance (6 males and 12 females) or aligner (11 males and 12 females) treatment. Patients completed daily discomfort diaries following their initial treatment appointment, after 1 month and after 2 months...
July 28, 2017: Angle Orthodontist
Kris Currie, Dena Sawchuk, Humam Saltaji, Heesoo Oh, Carlos Flores-Mir, Manuel Lagravere
OBJECTIVE: To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba). MATERIALS AND METHODS: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in duplicate...
July 24, 2017: Angle Orthodontist
Carlos Eduardo Nassif, Andreia Cotrim-Ferreira, Ana Claudia Castro Ferreira Conti, Danilo Pinelli Valarelli, Mauricio de Almeida Cardoso, Renata Rodrigues de Almeida-Pedrin
OBJECTIVE: To compare the magnitude of external apical root resorption (EARR) of maxillary incisors in patients with mild to moderate anterior crowding, treated with lingual and conventional (labial) orthodontics. MATERIALS AND METHODS: The sample comprised 40 patients divided into two groups: lingual (20 patients) and conventional buccal brackets (20 patients). Patient ages ranged from 11 to 45 years, and the study included 12 men and 28 women. Apical root resorption was measured from periapical radiographs obtained at the beginning of treatment (T1) and at the end of the leveling phase (T2)...
July 24, 2017: Angle Orthodontist
Donghyun Hwang, Won-June Lee, Kyung-A Kim, Seung-Hak Baek, Young-Guk Park, Su-Jung Kim
OBJECTIVE: To investigate the morphometric and histological alterations of the constricted alveolar ridge when affected by root thrusting with and without open-flap decortication. MATERIALS AND METHODS: Eight beagles were divided into three groups: C, control without root thrusting; R, root thrusting only; RD, root thrusting with alveolar decortication. The ridge constriction model was prepared in 16 mandibular quadrants after extraction of the third premolars. Reciprocal root thrusting of the second and fourth premolars was performed toward the constricted ridge for 10 weeks, having a moment of 900 g-mm...
July 14, 2017: Angle Orthodontist
Niousha Saghafi, Lisa J Heaton, Burcu Bayirli, David L Turpin, Roozbeh Khosravi, Anne-Marie Bollen
OBJECTIVE: To determine whether, in Class I borderline cases, experienced orthodontists choose nonextraction treatment more frequently than do orthodontists with less experience. A secondary aim was to evaluate whether clinicians' gender and place of education play a role in extraction decision making. MATERIALS AND METHODS: An online survey was developed using three Class I borderline patient cases. The survey included questions about clinicians' demographics as well as questions about the selected cases...
July 7, 2017: Angle Orthodontist
Alinne Segatto Pires Altmann, Fabricio Mezzomo Collares, Gabriela de Souza Balbinot, Vicente Castelo Branco Leitune, Antonio Shigueaki Takimi, Susana Maria Werner Samuel
OBJECTIVE: The aim of this study was to develop an experimental orthodontic adhesive and evaluate how adding phosphate invert glass containing niobium pentoxide (PIG-Nb) affected the adhesive's properties. MATERIAL AND METHODS: PIG-Nb was added at 1, 2.5, and 5 wt% to experimental adhesive (75 wt% bisphenol A methacrylate [BisGMA], 25 wt% triethylene glycol dimethacrylate [TEGDMA], 5 wt% colloidal silica and photoinitiator system). The adhesives were evaluated for mineral deposition, degree of conversion (DC), softening solvent by Knoop microhardness (KNH) variation, pH changes, and shear bond strength (SBS)...
July 7, 2017: Angle Orthodontist
Hye-Young Sim, Hee-Sun Kim, Da-Un Jung, Ho Lee, Jeong-Woo Lee, Kyungdo Han, Kyoung-In Yun
OBJECTIVE: To investigate the association between orthodontic treatment and periodontitis in a nationally representative sample of South Korea. MATERIALS AND METHODS: Data from the Fifth and Sixth Korean National Health and Nutrition Examination Survey (KNHANES V, VI-1, and VI-2), conducted from 2012 to 2014, were used in this study. The final sample size consisted of 14,693 adults aged ≥19 years. Logistic regression analysis was performed to assess the association between orthodontic treatment and periodontitis...
July 7, 2017: Angle Orthodontist
Eliana Dantas da Costa, Gina Delia Roque-Torres, Danieli Moura Brasil, Frab Noberto Bóscolo, Solange Maria de Almeida, Glaucia Maria Bovi Ambrosano
OBJECTIVE: To correlate the pharyngeal airway subregions with the positioning of the hyoid bone. MATERIAL AND METHODS: The study examined 107 lateral cephalometric (LC) and cone beam computed tomography (CBCT) images. Linear and volumetric measurements of the pharyngeal subregions were made and correlated to linear measurements using hyoid triangle analysis on images of LC and multiplanar (MPR) and three-dimensional (3D) reconstructions of CBCT. RESULTS: There was significant correlation between linear measurements of the pharyngeal subregions and hyoid bone position in LC images and in MPR and 3D reconstructions of the CBCT...
July 7, 2017: Angle Orthodontist
Thorsten Grünheid, Charlene Loh, Brent E Larson
OBJECTIVE: To evaluate the accuracy of Invisalign technology in achieving predicted tooth positions with respect to tooth type and direction of tooth movement. MATERIALS AND METHODS: The posttreatment models of 30 patients who had nonextraction Invisalign treatment were digitally superimposed on their corresponding virtual treatment plan models using best-fit surface-based registration. The differences between actual treatment outcome and predicted outcome were computed and tested for statistical significance for each tooth type in mesial-distal, facial-lingual, and occlusal-gingival directions, as well as for tip, torque, and rotation...
July 7, 2017: Angle Orthodontist
Jovana Juloski, Branislav Glisic, Vaska Vandevska-Radunovic
OBJECTIVE: To investigate the long-term influence of fixed lingual retainers on the development of mandibular gingival recession and to compare the prevalence with untreated individuals. MATERIALS AND METHODS: The material consisted of 144 subjects: 96 orthodontically treated patients followed for 5 years after therapy and 48 untreated age-matched subjects. The treated patients were divided in two groups: one receiving a fixed mandibular retainer (n = 48) and one receiving no form of retention in the mandible (n = 48)...
July 7, 2017: Angle Orthodontist
Giuseppe Perinetti, Riccardo Sossi, Jasmina Primozic, Gaetano Ierardo, Luca Contardo
OBJECTIVE: To investigate the diagnostic reliability of mandibular second molar maturation in assessing the mandibular growth peak using a longitudinal design. MATERIALS AND METHODS: From the files of the Burlington and Oregon growth studies, 40 subjects (20 from each collection, 20 males and 20 females) with at least seven annual lateral cephalograms taken from 9 to 16 years were included. Mandibular second molar maturation was assessed according to Demirjian et al...
June 28, 2017: Angle Orthodontist
Omar T Said, P Emile Rossouw, Leonard S Fishman, Changyong Feng
OBJECTIVE: To determine the relationship between anterior occlusion and frontal sinus size. METHODS: The patient database at the Eastman Institute for Oral Health, University of Rochester, was searched for male patients older than 15 years and females older than 13 years of age. After applying inclusion and exclusion criteria, participants' photos and lateral cephalometric and posteroanterior radiographs were examined then classified into a control class I group (n = 20, 15...
June 16, 2017: Angle Orthodontist
Riccardo Nucera, Antonino Lo Giudice, Angela Mirea Bellocchio, Paola Spinuzza, Alberto Caprioglio, Letizia Perillo, Giovanni Matarese, Giancarlo Cordasco
OBJECTIVE: To analyze the buccal bone thickness, bone depth, and cortical bone depth of the mandibular buccal shelf (MBS) to determine the most suitable sites of the MBS for mini-screw insertion. MATERIALS AND METHODS: The sample included cone-beam computed tomographic (CBCT) records of 30 adult subjects (mean age 30.9 ± 7.0 years) evaluated retrospectively. All CBCT examinations were performed with the i-CAT CBCT scanner. Each exam was converted into DICOM format and processed with OsiriX Medical Imaging software...
June 9, 2017: Angle Orthodontist
Zachary Librizzi, Zana Kalajzic, Daniel Camacho, Sumit Yadav, Ravindra Nanda, Flavio Uribe
OBJECTIVE: To evaluate the effect of corticotomy and corticision, with and without a full mucoperiosteal flap, on the rate of tooth movement and alveolar response in a rat model. MATERIALS AND METHODS: Sixty male, 6-week-old Wistar rats were divided into five groups based on surgical procedure, as follows: control (no tooth movement), orthodontic tooth movement (OTM) only, corticotomy, corticision, and corticision with full mucoperiosteal flap (corticision + flap)...
June 8, 2017: Angle Orthodontist
Fabian Jäger, James K Mah, Axel Bumann
OBJECTIVE: To quantify treatment-related changes in peridental bone height and thickness in orthodontic patients. MATERIALS AND METHODS: Cone-beam computed tomographs (CBCTs) of 43 patients (24 female, 19 male; mean age: 25 years, 5 months) who underwent orthodontic treatment with multibracket appliances for at least 1 year were chosen for retrospective evaluation. Dehiscence depth and changes in bone width and tooth inclination were determined for 954 teeth. RESULTS: There was a significant decrease in peridental bone height (dehiscence; -0...
May 29, 2017: Angle Orthodontist
Min-Hee Oh, Hyeon-Shik Hwang, Kyung-Min Lee, Jin-Hyoung Cho
OBJECTIVE: To compare the condylar displacement following sagittal split ramus osteotomy (SSRO) in asymmetric setback patients between the conventional approach and surgery-first approach and to determine whether the condylar displacement is affected by asymmetric setback in SSRO patients. MATERIALS AND METHODS: This was a retrospective study. The subjects consisted of patients with facial asymmetry who underwent SSRO and had cone-beam computed tomography taken before and 1 month after surgery...
May 22, 2017: Angle Orthodontist
Andrea Wichelhaus
OBJECTIVE: To biomechanically test a new elastic slot system and V-wire mechanics. MATERIALS AND METHODS: Conventional twin and self-ligating brackets and the new elastodynamic bracket were biomechanically tested. The conventional brackets had a rectangular 0.022'' slot and the new elastodynamic bracket had a V-slot, a new slot geometry. Torque measurements were performed with 0.018'' × 0.025'' and 0.019'' × 0.025'' stainless steel (ss) archwires. A nickel-titanium V wire was used for the biomechanical measurements on the elastodynamic bracket...
May 22, 2017: Angle Orthodontist
Surbhi Thakkar
No abstract text is available yet for this article.
July 2017: Angle Orthodontist
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