Does mandibular advancement ortho-surgical procedure cause condyle changes? A case-series analysis.

Introduction: Mandibular advancement surgery corrects bone bases while establishing patients' functional and aesthetic rehabilitation. However, little is known about the results of this procedure in the structures that make up the stomatognathic system, as the condyles.

Objective: This study aimed to evaluate the structural and positional changes of mandibular condyles in ortho-surgical patients who underwent mandibular advancement surgery.

Effect of cigarette smoke on aesthetic brackets: an in vitro study.

Objective: The objective of this study was to evaluate the effect of cigarette smoke (CS) on physical and mechanical properties of ceramic, polycarbonate and alumina ceramic brackets. The null hypothesis tested was that aesthetic brackets would not be influenced by CS.

Methods: Ninety aesthetic brackets were allocated to three groups (n = 30): ceramic (GCE), polycarbonate (GCO) and alumina ceramic (GPS).

Is there a correlation between dental and cervical vertebrae maturation stages in growing subjects? A systematic review with meta-analysis.

Objective: To assess the evidence on the relationship between dental and cervical vertebrae maturation.

Materials And Methods: Searches were performed (up to December 2021) in seven databases, as well as in gray literature. Studies that included growing subjects, which evaluated the correlation between the stages of tooth formation and the maturation of cervical vertebrae, were eligible.

Reasons influencing the preferences of prospective patients and orthodontists for different orthodontic appliances.

Objective: To evaluate the reasons influencing the preferences for a certain type of orthodontic appliance over another among prospective patients (PP) and orthodontists.

Methods: A total of 49 PP and 51 orthodontists were asked about their preferences for the following appliances: clear aligners (CA), lingual metallic brackets (LMB), polycrystalline and monocrystalline ceramic brackets, and buccal metallic brackets (BMB). The participants rated the importance of 17 potential reasons that would explain their choices.

Impaction of mandibular third molars after orthodontic treatment by the edgewise method: a retrospective study.

This study aimed to determine the incidence of mandibular third molar (M3) impaction after orthodontic treatment by edgewise appliances, and identify possible determinant factors of M3 impaction. A retrospective cohort study was conducted with 1154 patients. Complete orthodontic records were analyzed pretreatment and posttreatment, considering the following variables: type of Angle malocclusion, treatment with or without extraction of first premolars, overbite, stage of dentition, M3 prior angulation and duration of orthodontic treatment.

The influence of cigarette smoke on colour stability and friction property of aesthetic orthodontic wires-In vitro study.

Objective: To evaluate the colour stability and friction property of aesthetic orthodontic wires when exposed to cigarette smoke.

Materials And Methods: Forty-eight samples of aesthetic orthodontic wires (0.019″×0.

Development of a calcified odontogenic hamartoma following avulsion of a permanent central incisor.

The avulsion of a permanent immature tooth is a serious condition and a real emergency in dentistry. The management of a traumatized avulsed tooth is always a challenge to the clinician. This case report concerns the development of a calcified odontogenic hamartoma after the avulsion of an immature central incisor in an eight-year-old female.

Escobar Syndrome-An Multidisciplinary Approach for an Excellent Outcome With 3 Years of Follow-Up.

This case report intends to provide the facial characteristics of Escobar syndrome and to describe the orthodontic treatment of a 12-year-old female patient diagnosed with it. Escobar syndrome, a variant of the multiple pterygium syndrome, is a rare disorder with many systemic, facial, and oral manifestations.The patient presented with mixed dentition, severe dolichofacial pattern, increased lower facial height, convex profile, severe anterior open bite, maxillary hypoplasia, and mandibular retrognatism.

Lifestyle and oral facial disorders associated with sleep bruxism in children.

Objective: The aim of the study was to investigate the routine, sleep history, and orofacial disorders associated with children aged 3-7 years with nocturnal bruxism.

Methods: Children (n = 66) were divided into groups of parent reported nocturnal bruxism (n = 34) and those without the disorder (n = 32). Data about the child's routine during the day, during sleep and awakening, headache frequency, temporomandibular joint (TMJ), and hearing impairments were obtained through interviews with parents/caregivers.

Transverse effects on the nasomaxillary complex one year after rapid maxillary expansion as the only intervention: a controlled study.

The aim of this study was to assess by means of cone-beam computed tomography (CBCT) scans the transverse effects on the nasomaxillary complex in patients submitted to rapid maxillary expansion (RME) using Haas expander in comparison to untreated individuals. This prospective controlled clinical study assessed 30 subjects (18 boys and 12 girls) with mixed dentition and during pubertal growth. The treated group was submitted to RME with Haas expander, retention for six months and a six-month follow-up after removal.

Early vs late orthodontic treatment of tooth crowding by first premolar extraction: A systematic review.

Objective: To investigate the body of evidence in the literature about the most favorable time for initiating orthodontic treatment in patients with severe crowding caused by tooth size arch length deficiency (TSALD).

Materials And Methods: Electronic databases (PubMed, Ovid Medline, Scopus, Virtual Health Library, and The Cochrane Library) were searched for articles published between 1900 and April 2014. Studies were included that evaluated treatment of patients with severe crowding caused TSALD, who were treated with first premolar extraction.

Are self-ligating brackets related to less formation of Streptococcus mutans colonies? A systematic review.

Objective: To verify, by means of a systematic review, whether the design of brackets (conventional or self-ligating) influences adhesion and formation of Streptococcus mutans colonies.

Search Strategy: four databases (Cochrane Central Register of Controlled Trials, Ovid ALL EMB Reviews, PubMed and BIREME) were selected to search for relevant articles covering the period from January 1965 to December 2012.

Selection Criteria: in first consensus by reading the title and abstract.

Does cortical thickness influence the primary stability of miniscrews?: A systematic review and meta-analysis.

Objective: To investigate whether there is evidence to support the association between cortical thickness (CtTh) and the primary stability of mini-implants (MI).

Materials And Methods: A search was performed including articles published until September 2013. The inclusion criteria comprised observational clinical studies conducted in patients who received monocortical MI for orthodontic anchorage and in vivo or ex vivo experimental studies performed to evaluate the primary stability of MI, studies that evaluated the association between CtTh and MI primary stability, CtTh measurement performed numerically, and MI primary stability evaluated by implant stability quotient value, Periotest value , pull-out strength, or insertion torque.

Is trabecular bone related to primary stability of miniscrews?

Objective: To compare the primary stability of miniscrews inserted into bone blocks of different bone mineral densities (BMDs) with and without cortical bone, and investigate whether some trabecular properties could influence primary stability.

Materials And Methods: Fifty-two bone blocks were extracted from fresh bovine pelvic bone. Four groups were created based on bone type (iliac or pubic region) and presence or absence of cortical bone.

Superficial morphology and mechanical properties of in vivo aged orthodontic ligatures.

Introduction: The degradation of elastic ligatures in the oral environment results in the need of periodic replacement to maintain the optimal force during the orthodontic treatment. The purpose of this study was to perform a clinical prospective randomized study of the degradation of orthodontic elastomeric ligatures in the oral environment by scanning electron microscopy (SEM) and tensile strength test.

Methods: Two hundred elastic ligatures were randomly selected and placed around the brackets of 5 volunteers and removed in groups of 10, at different times (1, 2, 3, and 4 weeks).

Changes of pulp-chamber dimensions 1 year after rapid maxillary expansion.

Introduction: The purpose of this study was to examine the effect of orthopedic forces on maxillary first molars' and maxillary central incisors' pulp chambers in children having rapid maxillary expansion as the only intervention compared with children having no orthodontic intervention by using cone-beam computed tomography images.

Methods: In this prospective controlled clinical study, we evaluated 60 maxillary first molars and 60 maxillary central incisors from 30 children (18 boys, 12 girls) in the mixed dentition and during the pubertal growth period. The treated group had rapid maxillary expansion with the Haas expander, followed by 6 months of retention and 6 months of follow-up out of retention; the control group had no intervention during the study.

In situ evaluation of orthodontic elastomeric chains.

The hypothesis tested in this study was that intraoral exposure of elastomeric chains alters their tensile strength. For such purpose, it was evaluated the in situ behavior of different elastomeric chains stretched for 3 weeks. Three kinds of elastomeric chains, Plastic chain (PC), Memory chain (MC) and Super slick chain (SSC), were randomly placed in 3 quadrants of 13 patient in a fixed distance of 16 mm and mean initial force of 180 g.

Is miniscrew primary stability influenced by bone density?

Primary stability is absence of mobility in the bone bed after mini-implant placement and depends on bone quality among other factors. Bone quality is a subjective term frequently considered as bone density. The aim of this preliminary study was to evaluate bone density in two bovine pelvic regions and verify the primary stability of miniscrews inserted into them.

Does rapid maxillary expansion have long-term effects on airway dimensions and breathing?

Introduction: In this systematic review, we identified and qualified the evidence of long-term reports on the effects of rapid maxillary expansion (RME) on airway dimensions and functions.

Methods: Electronic databases (Ovid, Scirus, Scopus, Virtual Health Library, and Cochrane Library) were searched from 1900 to September 2010. Clinical trials that assessed airway changes at least 6 months after RME in growing children with rhinomanometry, acoustic rhinometry, computed tomography, or posteroanterior and lateral radiographs were selected.

Bone mineral density.

Objective: To verify whether bone mineral density (BMD) of cortical bone, trabecular bone, and total bone influence the primary stability of orthodontic miniscrews and to verify whether there is a correlation between the measurement of BMD by cone-beam computed tomography (CBCT) and central dual-energy x-ray absorptiometry (DEXA).

Materials And Methods: Twenty bovine bone sections were extracted from the pubic and iliac bones from regions with cortical thicknesses of approximately 1 mm. The BMD of the total bone block was evaluated using two methods: CBCT and DEXA.

Long-term fluoride release from resin-reinforced orthodontic cements following recharge with fluoride solution.

The aim of this study was to test the hypothesis that there is no difference in the fluoride release behavior of resin-reinforced glass ionomer cements before or after fluoride recharge. The materials were divided into 5 groups: 2 resin-reinforced glass ionomer cements used for attaching orthodontic bands, that is, group FOB (Fuji Ortho Band) and group MCB (Multi-Cure Glass Ionomer Orthodontic Band Cement); 2 resin-reinforced glass ionomer cements and a composite used for bonding orthodontic brackets, that is, group OGLC (Ortho Glass LC), group FOLC (Fuji Ortho LC), and group TXT (Transbond XT), respectively. Fluoride release was measured during a 60-day period by using selective ion electrodes connected to an ionic analyser.

Display of the incisors as functions of age and gender.

Background: Older subjects usually show less of their upper incisors and more of their lower incisors than younger subjects.

Objectives: To determine how much of the upper and lower central incisor crowns are visible in Brazilian subjects with their lips at rest.

Methods: The subjects were 240 white Brazilian subjects divided into four age groups: Group 1, 12 to 15 years of age; Group 2, 20 to 30 years of age; Group 3, 31 to 50 years of age and Group 4, 51 years of age and older.

The use of lidocaine as an anti-inflammatory substance: a systematic review.

Objective: To investigate existence of evidence that supports the therapeutical use of lidocaine as an anti-inflammatory substance.

Methods: A search on health sciences databases was performed, including only papers published in English until May 2007 which reported in vivo experimental studies that tested lidocaine as an anti-inflammatory substance and used morphological and/or biochemical analysis. The keywords used were: "lidocaine & inflammation", "lidocaine & neutrophils" and "lidocaine & prostaglandin".