Initial experiences with NAM-assisted primary repair of the BCLP deformity.

Background: Primary surgical repair of the bilateral cleft lip and palate (BCLP) deformity is challenging. Infant Orthopedic (IO) procedures are often used to assist surgical reconstruction of normal anatomy. Nasoalveolar molding (NAM) is a presurgical infant orthopedic procedure that attempts to reduce the cleft nasal deformity, in addition to the lip and alveolus, leading to an esthetic primary surgical repair.

Effect of Three-wall Bony Defect along Various Root Surfaces on Position of Center of Resistance: A 3D Finite Element Analysis.

Introduction: Increase in adult orthodontic patients has increased the challenges faced by orthodontists, as they often present themselves with a varying degree of dental and peri-odontal compromise, in which the entire orthodontic treatment planning will revolve around maintenance and augmentation of supporting apparatus. One of the many factors to be considered during treating an adult patient is the height of alveolar bone and its effect on center of resistance (CRes).

Materials And Methods: Eight 3D analytical models of upper central incisor were designed using 'Solid Works Office Premium'.

A New Classification System for Unilateral Cleft Lip and Palate Infants to assist Presurgical Infant Orthopedics.

The proposed advantages of pre-surgical naso-alveolar moulding (PNAM) are easy primary lip repair which heals under minimum tension reducing the scar formation and improving the aesthetic results in addition to reshaping of alar cartilage and improvement of nasal symmetry.However, the anatomy and alveolar morphology varies for each cleft child; the procedure for PNAM differs accordingly. In an attempt to categorize unilateral cleft lip and palate cases as per anatomical variations, a new classification system has been proposed.

Cephalometric appraisal of tongue and related soft tissues in normal and open bite subjects at rest.

Aim: To compare the tongue position of normal and open bite subjects at rest and to study if there is any difference in the hyoid bone and posterior pharyngeal wall positions in normal and open bite subjects.

Materials And Methods: Sample size consisted of 48 individuals with 24 subjects having normal occlusion and 24 subjects having open bite malocclusion within the age range of 16 to 25 y. Standardized Lateral cephalograms were taken for all the subjects.

Stress distribution in the temporomandibular joint after mandibular protraction: a three-dimensional finite element study.

Objective: To evaluate the stress patterns in temporomandibular joint (TMJ) during mandibular protraction at different horizontal advancements with constant vertical height in a construction bite using a three-dimensional finite element method.

Materials And Methods: A three-dimensional computer-aided model was developed from the magnetic resonance imaging (MRI) of a growing boy (age 12 years) using MIMICS software (version 7.0, Materialise, Leuven, Belgium).

Alternative approaches to managing the cleft alveolus.

The cleft alveolus component of the oral cleft deformity is addressed with a separate surgical stage. Several host and operator related factors affect the surgical outcome. When factors that increase the likelihood of secondary alveolar bone graft failure are identified, alterative methods like dentoalveolar distraction (DAD) may be employed.

Efficacy trial of Camouflage Syringe to reduce dental fear and anxiety.

Aim: Dental fear and anxiety in early childhood are widely prevalent and contribute to dental problems and behaviour in adulthood. Novel ways to reduce dental fear and anxiety in children are needed. Our aim was to conduct an efficacy trial of a novel Camouflage Syringe to reduce dental fear and anxiety in children.

Deflection and stress distribution around mini-screw implants: a finite element investigation into the effect of cortical bone thickness, force magnitude and direction.

Objective: The purpose of this investigation was to quantitatively evaluate mini-screw deflection and stress distribution associated with two different cortical bone thicknesses (CBTs) under loading with two applied forces at four different angles.

Material And Methods: Four finite element models (ANSYS 11) of bone with mini-screws (Dentos) inserted at 90° angulation to the cortical surface were made as follows: model A: CBT 1·5 mm, load 200 g; model B: CBT 2 mm, load 200 g; model C: CBT 1·5 mm, load 300 g; model D: CBT 2 mm, load 300 g. In each model, the loading force was applied at angulations of 70, 90, 110 and 130° to the long axis of the mini-screw.

Evaluation and comparision of the shear bond strength of rebonded orthodontic brackets with air abrasion, flaming, and grinding techniques: an in vitro study.

Aim: To evaluate and compare in vitro the shear bond strength of rebonded orthodontic brackets among the three most frequently used rebonding methods--sandblasting, direct flaming, and grinding with a green stone bur. The surface characteristics of new and rebonded bracket bases were also compared using scanning electron microscopy (SEM).

Methods: The sample used in the present study comprised 60 extracted human premolars bonded with brackets.

Mastering interproximal stripping: with innovations in slenderization.

Unlabelled: Crowding and irregularity remain a consistent problem for children. Management of space problems continues to play an important role in a dental practice. It also represents an area of major interaction between the primary provider and the specialists.

Pre-directional appliance: a new approach to correct shifted premaxilla in bilateral cleft cases.

Management of bilateral cleft lip and palate cases is a challenging task, and if the premaxilla is shifted to either side, it poses a problem for the surgeon to operate and also for the orthodontist to do the orthodontic alignment. The aim of this study was to reposition the shifted premaxilla for better retraction with presurgical infant orthopedics, thus reducing the tissue tension and further scarring which have detrimental effects on maxillary growth. The innovative technique with pre-directional (PD) appliance is easy to fabricate and use and works in this direction.

Presurgical nasoalveolar molding assisted primary reconstruction in complete unilateral cleft lip palate infants.

Background: Various methods have been described for the primary surgical reconstruction of the unilateral cleft lip and palate deformity (UCLP) in infants. There have been several attempts at restoring the normal anatomy of the nose at the time of lip repair in the affected individuals with varying degrees of success. Presurgical nasoalveolar molding (PNAM) is a presurgical infant orthopedic procedure that attempts to target the nasal deformity leading to a more esthetic surgical repair.

Changes in maxillary alveolar morphology with nasoalveolar molding.

Aim: To evaluate the changes in maxillary alveolar morphology in unilateral cleft lip palate infants treated with nasoalveolar molding (NAM).

Setting And Design: Study was carried out in the orthodontic department associated with a operating cleft unit in a rural region of central India. Ten UCLP (unilateral cleft lip palate) infants less than 6 weeks of age were treated with NAM prior to surgical repair.

Stress distribution in the temporomandibular joint after mandibular protraction: a 3-dimensional finite element study. Part 2.

Introduction: Patterns of stress generation in the temporomandibular joint (TMJ) after mandibular protraction with a construction bite of 5 mm advancement and 4 mm opening were investigated by using a 3-dimensional finite element method; the results were reported in Part 1. In Part 2, the effects of varying the construction bite are reported.

Methods: A 3-dimensional computer-aided design model was developed from the magnetic resonance images of a growing boy (age, 12 years), by using I-DEAS NX (version 11.

Stress distribution in the temporomandibular joint after mandibular protraction: a 3-dimensional finite element method study. Part 1.

Introduction: This study was designed to evaluate patterns of stress generation in the temporomandibular joint after mandibular protraction, by using a 3-dimensional finite element method. The results of the initial investigation are reported here in Part 1. The effects of varying the construction bite are reported in Part 2.

Scanning electron microscopic study and shear bond strength measurement with 5% and 37% phosphoric acid.

Direct bonding of orthodontic attachments has become a clinical reality with the application of the acid etch technique, using 37% phosphoric acid. The objective of this study was to detect the etch pattern with scanning electron microscopy and the shear bond strength with a Hounsefield tensometer (Nene Instruments Ltd., Northampton, England) by using 37% and 5% phosphoric acid (H3PO4).