Comparing the mechanical properties of the polymer orthodontic bracket materials with the conventional orthodontic bracket materials: A systematic review.

Background: The aim of this study was to compare the mechanical properties of the polymer brackets with metal and ceramic brackets and verify if the polymer brackets could be used clinically.

Materials And Methods: A thorough search was conducted in four electronic databases, including Scopus, PubMed, Cochrane, Ovid, and Lilacs, with article selection based on Preferred Reporting Items for Systematic Reviews and Meta-Analysis standards. A computerized search of the database was done from January 1990 to June 2024.

The Effect of Three Metal Oxide Nanocoatings on the Frictional Resistance of Superelastic Orthodontic Archwires: A Comprehensive Analysis.

Aim And Objective: To evaluate and compare the impact of nanocoatings made of oxides of Aluminum, Titanium, and Zirconium, on the frictional resistance on three types of superelastic orthodontics archwires namely; nickel titanium, copper nickel titanium and low hysteresis nickel titanium.

Materials And Methods: There are120 archwire segments of equal dimensions were divided into four groups ( = 30) with 10 samples each of low hysteresis superelastic archwires; NiTi archwires and CuNiTi archwires. While group A were uncoated, other groups were nanocoated with group B: Aluminum oxide; group C: Titanium dioxide; group D: Zirconium oxide respectively.

Mechanical Properties and Potential Clinical Implications of Improved Superelastic Orthodontic Archwires: An Observational Study.

Background: Superelastic materials have gained popularity due to their ability to maintain a constant force over a prolonged period during orthodontic treatment. However, high hysteresis and frictional properties had limited the use of superelastics as archwire material that demanded the need for improved superelastic orthodontic archwires with enhanced mechanical properties.

Aim: The present study aimed to investigate the differences in mechanical properties and frictional resistance of improved superelastic orthodontic archwires against conventional archwires and to evaluate their potential implications in clinical orthodontic practice.

Effect of Ethyl Alcohol Wet Bonding on Shear Bond Strength in Orthodontic Brackets - An Study.

Aim: To evaluate the effect of ethyl alcohol wet bonding on the shear bond strength of orthodontic brackets.

Materials And Methods: 90 premolar teeth were collected and divided into 6 groups - conventional dry, conventional wet, MIP dry, MIP wet, ethanol dry, and ethanol wet. The teeth were bonded as per the requirements for each group.

Reproducibility of linear and angular cephalometric measurements obtained by an artificial-intelligence assisted software (WebCeph) in comparison with digital software (AutoCEPH) and manual tracing method.

Introduction: It has been suggested that human errors during manual tracing of linear/angular cephalometric parameters can be eliminated by using computer-aided analysis. The landmarks, however, are located manually and the computer system completes the analysis. With the advent of Artificial Intelligence in the field of Dentistry, automatic location of the landmarks has become a promising tool in digital Orthodontics.

Evaluation and comparison of stresses and displacements generated by four different types of asymmetric maxillary expansion appliances in true unilateral crossbite using finite element method.

Introduction: True unilateral posterior crossbite can be efficiently treated by using asymmetric expansion appliances that essentially exert unilateral expansion forces thereby minimizing iatrogenic overexpansion of the normal pretreatment side.

Aim: To evaluate and compare the stresses and displacements generated by four different types of asymmetric maxillary expansion appliances in true unilateral crossbite using the finite element method.

Materials And Methods: A CBCT image of the skull was obtained from a 12-year-old female patient with a true unilateral posterior crossbite on the right side, for the FEM study.

Patient-reported outcome measures following maxillomandibular advancement surgery in patients with obstructive sleep apnoea syndrome.

Maxillomandibular advancement (MMA) is an effective treatment for obstructive sleep apnoea syndrome (OSAS) that is refractory to conventional treatment. However, it is a highly invasive procedure with several recognised side effects, and we know of few data on its effect on important patient-reported outcome measures (PROMS). Here we describe a case series of patients selected for MMA through our joint respiratory/maxillofacial surgery clinic, detailing the effect of MMA on objective physiological measurements and important PROMS.

Effect of placement angle, diameter, length and bone density on the pull-out strength of orthodontic mini-implants: An in vitro study.

Objective: To evaluate the effect of the placement angle, diameter, length and bone density on the mechanical stability of orthodontic mini-implants by measuring their pull-out strengths.

Design: A total of 120 mini-implants of four different dimensions made from titanium were used. They measured 1.

The Influence of the Mandibular Gonial Angle on the Incidence of Mandibular Angle Fracture-A Radiomorphometric Study.

Purpose: The aim of this radiomorphometric study was to analyze the association between the mandibular gonial angle and the risk of mandibular angle fracture.

Materials And Methods: A retrospective analysis of medical records and radiographs of patients treated for mandibular fractures was performed. The exposure studied was the presence of a high gonial angle and the outcome was fracture of the mandibular angle.

Use of three-dimensional printing to assess transport vectors in mandibular distraction osteogenesis.

It can be difficult to assess the transport vectors for mandibular distraction osteogenesis intraoperatively. Computed tomography (CT) and 3-dimensional digital reconstruction allow "on screen" assessment, but they have limitations, and errors can occur when the 2-dimensional preoperative plan is translated into the operation. We can simulate the operation and reconstruction with 3-dimensional printed models.

Closed-eye orbital prosthesis: a clinical report.

One of the most challenging prostheses to fabricate is an acceptable orbital prosthesis. Successful reconstruction of the complex missing tissues, the globe, muscle, skin, and bony elements requires time and high levels of practical skill. A good match to the contralateral nondefect side will help mask the underlying defect and give the patient confidence to return to normal, routine life.

Correction of facial and mandibular asymmetry using a computer aided design/computer aided manufacturing prefabricated titanium implant.

Patients with significant craniofacial asymmetry may have functional problems associated with their occlusion and aesthetic concerns related to the imbalance in soft and hard tissue profiles. This report details a case of facial asymmetry secondary to left mandible angle deficiency due to undergoing previous radiotherapy. We describe the correction of the bony deformity using computer aided design/computer aided manufacturing custom-made titanium onlay using novel direct metal laser sintering.

A novel approach to immediate restoration of the cosmetic deformity after regional temporalis flap reconstruction of a maxillary defect: a case report.

Restoration of large maxillary defects can be achieved by using various muscle and bone flap transfers. Free muscle and bone transfer has become the reconstruction standard because it offers a combination of bone and soft tissues, which allows primary closure of the defect and secondary placement of dental implants for a full rehabilitation approach. If free tissue transfer is not a viable option, regional flaps such as temporalis muscle offer a viable alternative.

Normal fusion of the metopic suture.

There is some uncertainty as to when normal fusion of the metopic suture occurs. Existing studies have included relatively small numbers and have not used a statistical model to represent any variation in normality. In this study, a total of 337 head computed tomographic scans performed between 2006 and 2009 were retrospectively reviewed after strict exclusion criteria were met.

Dual-plane approach for calvarial exposure.

Damage to the temporal branch of the facial nerve and temporal hollowing are known complications of raising a bicoronal flap. We describe a technique of raising a bicoronal flap in dual plane that will avoid these potential complications.