Mandibular shape prediction model using machine learning techniques.

Objective: To create a mandibular shape prediction model using machine learning techniques and geometric morphometrics.

Materials And Methods: Six hundred twenty-nine radiographs were used to select the most appropriate craniomaxillary variables in different craniofacial pattern classifications using a support vector machine. To obtain the three-dimensional mandibular shape, a Procrustes fit was used on 55 tomograms, in which 17 three-dimensional landmarks were digitized.

Effect of autohemotherapy in the treatment of viral infections - a systematic review.

Objective: To analyze the literature to determine whether autohemotherapy has any effect either clinically or on the immune system on viral diseases on the last ten years.

Study Design: Systematic review.

Methods: Searches from the year 2010, with at least 5 patients were conducted in PubMed/MEDLINE, Embase, Scopus, Cochrane, LILACS, SciELO, and Web of Science databases.

Latency phase in mandibular distraction osteogenesis: a systematic review in animal models.

The aim of the present study was to perform a systematic review of the need for the latency period in distraction osteogenesis to obtain adequate bone formation. Searches were performed in the Web of Science, Pubmed/MEDLINE, Scopus, and Cochrane electronic databases. Nine articles were selected for qualitative analysis.

The effects of zoledronic acid on the progression of experimental periodontitis in rats: histological and microtomographic analyses.

Purpose: Periodontitis is considered a local risk factor for medication-related osteonecrosis of the jaws (MRONJ). However, little is known about the progression of periodontitis in the presence of zoledronic acid (ZOL). The aim of this study was to evaluate the effects of the systemic use of ZOL on the progression of experimental periodontitis (EP) in rats, as ZOL could modulate the progression of periodontitis and concomitantly cause MRONJ in individuals with periodontitis.

Differences in skeletal growth patterns: an exploratory approach using elliptic Fourier analysis.

Objective: Apply elliptic Fourier analysis to find shape differences among the hypodivergent, normodivergent, and hyperdivergent growth patterns in skeletal classes I, II and, III in mandibular and maxillary curves and evaluate the discriminatory capacity of these differences.

Materials And Methods: A total of 626 adult patients were included: 354 Brazilian patients (52 with tomographic information and 302 with radiographic information) and 272 Colombian patients with radiographic information. Lateral views were selected.

Effectiveness of nicotine patch for the control of pain, oedema, and trismus following third molar surgery: a randomized clinical trial.

The aim of this study was to evaluate the effectiveness of a nicotine patch for the control of pain, oedema, and trismus following lower third molar surgery. A prospective, randomized, triple-blind, split-mouth trial was performed involving 20 patients who underwent two surgical procedures at different times. A patch containing 14mg nicotine was used in the experimental group, whereas a patch without nicotine (placebo) was used in the control group.

Proximity of the maxillary artery to the neck of the mandibular condyle: anatomical study.

Purpose: The objective of this study was to evaluate the anatomical distance of the maxillary artery, the most superior portion of the condyle and subcondyle in standardized coronal sections, acquired from 16 hemifaces in 8 cadavers.

Methods: Measurements were taken to evaluate the distance between the uppermost portion of the mandibular condyle and the height of the maxillary artery (AB) and between the lateral (CD) and medial (EF) sides of the condylar neck to the artery.

Results: The mean for AB was 21.

Efficacy of proportional versus high condylectomy in active condylar hyperplasia - A systematic review.

Objective: To perform a systematic literature review to test the efficacy of proportional condylectomy versus high condylectomy in patients with active condylar hyperplasia, in terms of avoiding secondary surgeries.

Method: Following a search of Medline (Pubmed), Embase, Scopus, Web of Science and Cochrane databases, ten studies were included for qualitative analysis, and two studies were included for meta-analysis. Quality assessment was performed using the Newcastle-Ottawa scale for cohort studies and the 18-item modified Delphi technique for case series.

Is bromelain an effective drug for the control of pain and inflammation associated with impacted third molar surgery? Systematic review and meta-analysis.

The aim of this systematic review was to determine whether bromelain is an effective drug for the control of pain and inflammation associated with third molar surgery. Randomized, controlled clinical trials on the subject were identified through a systematic search of the literature using the PubMed/MEDLINE, Scopus, and Cochrane Library databases. This review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA).

Efficacy of corticosteroids versus placebo in impacted third molar surgery: systematic review and meta-analysis of randomized controlled trials.

The aim of this systematic review was to identify randomized, placebo-controlled clinical trials investigating the effectiveness of corticosteroids in the control of pain, oedema, and trismus following third molar surgery, and to analyse the effects of the type of drug administered and the time and route of drug administration on the outcomes of interest. Searches were performed in the PubMed, Scopus, and Cochrane Library databases. This review was structured according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses.

A Pragmatic Study Shows Failure of Dental Composite Fillings Is Genetically Determined: A Contribution to the Discussion on Dental Amalgams.

Composite resins for posterior tooth restorations have become a viable alternative to dental amalgam. Failures sometimes cannot be easily explained, and we hypothesize that a genetic component may influence longevity of restorations. We aimed to determine if there is any evidence for a difference in the performance of amalgams versus composite resin in extensive posterior restorations.

Cryosurgery as an Option for the Treatment of Vascular Lesions of the Oral Cavity.

Cryosurgery is a treatment modality consisting in the destruction of tissue by the application of extremely low temperatures. This causes irreversible damage to cellular metabolism, leading to tissue destruction within minutes, a mechanism that may be beneficial when used in diseased tissues. Because cryosurgery is effective, simple, and easy to perform, it has been used in the treatment of lesions in both medical and dental fields.

Recurrence rate following treatment for primary multicystic ameloblastoma: systematic review and meta-analysis.

Opinions regarding the treatment of multicystic ameloblastoma are divergent due to its benign nature and the high rate of recurrence if not adequately excised. The aim of the present study was to perform a systematic review of the literature for a qualitative and quantitative assessment of studies addressing primary multicystic ameloblastoma with regard to treatment and recurrence. Searches were conducted of the Ovid Medline and Embase databases for articles published up to January 2014.

Treatment of condylar fractures with an intraoral approach using an angulated screwdriver: results of a multicentre study.

Background: This multicentre study aimed to investigate long-term radiographic and functional results following the treatment of condylar fractures using an angulated screwdriver system and open rigid internal fixation with an intraoral surgical approach.

Methods: Twenty-nine patients with a total of 32 condylar fractures were evaluated. The patients were investigated prospectively based on the following variables: age, sex, aetiology, side, location and classification of the fracture, degree of displacement, associated fractures, surgical approach, oral health status, type of osteosynthesis plate, duration of surgery, mouth-opening, complications, and duration of follow-up.

Retrograde migration of a ventriculoperitoneal shunt to the neck after dental treatment.

The ventriculo-peritoneal shunt (VPS) is the technique most often employed for the treatment of hydrocephaly, but may present complications after placement. Retrograde migration of the peritoneal catheter to the cervical region is rarely reported. This manuscript to describes a case of migration of the distal portion of the VPS system to the neck after dental treatment in a child and discusses the possible causes for this complication.

Prevalence and predictive factors of dental anxiety in Brazilian adolescents.

Purpose: The purpose of this study was to determine the prevalence and predicitve factors of dental anxiety among Brazilian adolescents.

Methods: This was a cross-sectional study of a random sample of 340 Brazilian adolescents, done between 2005 and 2010. Corah's Dental Anxiety Scale and an objective questionnaire were used to determine the degree of dental anxiety.

Destructive aneurysmal bone cyst of the mandible.

Aneurysmal bone cyst (ABC) is an uncommon osteolytic lesion of the bones, usually affecting the long bones and spine. The lesion is rare in the jaws and is found most commonly in the body and ramus of the mandible. In some cases, ABCs may be present as rdestructive lesions simulating malignancies.

Hemodynamic changes comparing lidocaine HCl with epinephrine and articaine HCl with epinephrine.

Background: The aim of the present study was to analyze hemodynamic changes after the administration of either 2% lidocaine with epinephrine 1:100,000 (L100) or 4% articaine with epinephrine 1:200,000 (A200) in the surgical removal of symmetrically positioned lower third molars.

Methods: A prospective, randomized, double-blind, clinical trial was carried out involving 43 patients. Each patient underwent 2 surgeries on different occasions-one under local anesthesia with L100 and the other with A200.

Intraoral approach for removal of large sialolith in submandibular gland.

Sialolithiasis is a benign pathology that occurs most frequently in the submandibular salivary gland due to its anatomic features. Depending on the size and degree of calcification, a sialolith can be visible in radiographic examinations. Patients commonly experience pain and/or edema when the ducts are obstructed.

Hemodynamic changes comparing 2% lidocaine and 4% articaine with epinephrine 1: 100,000 in lower third molar surgery.

Background: An increase in blood pressure during dental treatment has been investigated with regard to potential medical risks since previous studies suggest that dental procedures may cause stress to the patient and, consequently, the cardiovascular system. The aim of the present study was to analyze hemodynamic changes following the administration of either 2% lidocaine (L100) or 4% articaine (A100) (both with epinephrine 1:100,000) in the surgical removal of symmetrically positioned lower third molars.

Methods: A prospective, randomized, double-blind, clinical trial was carried out involving 47 patients.

Impact of remineralizing agents on enamel microhardness recovery after in-office tooth bleaching therapies.

Objective: It has been shown that bleaching with 35/38% hydrogen peroxides may alter both enamel morphology and mineral content. This study aimed to analyze the morphology and microhardness of enamel bleached with in-office hydrogen peroxides and exposed toremineralizing agents.

Materials And Methods: After recording initial enamel morphology and microhardness, 60 bovine incisors were bleached using either a calcium-containing 35% hydrogen peroxide (Whiteness HP Blue) or a calcium-free 35% hydrogen peroxide (Whitegold Office) (n = 30).

Congenital lipoma of the lip: a case report.

We describe a rare case of large congenital lipoma in the upper lip of a six-month-old infant. Surgical excision of the tumor was successful, with satisfactory esthetic and functional results.