A comparative finite element analysis of titanium, poly-ether-etherketone, and zirconia abutment on stress distribution around maxillary anterior implants.

Background: The aim of this study was to investigate the influence of abutment material, alveolar bone density, and occlusal forces on stress distribution around maxillary anterior implants.

Materials And Methods: An study was conducted. The maxillary anterior implant was modeled using a three-dimensional finite element model in D2 and D3 bones with three different abutment materials: titanium, zirconia, and poly-ether-ether ketone (PEEK).

A three-dimensional finite element analysis to evaluate stress distribution tooth in tooth implant-supported prosthesis with variations in non-rigid connector design and location.

Background: The physiologically mobile natural tooth and rigidly fixed dental implant causes different distribution of stress when connected in prosthesis and nonrigid connector compensates this. Understanding of biomechanical behavior is necessary for an adequate choice and construction of this type of rehabilitation. However, there has been insufficient research focusing on different location and type of the nonrigid connector related with the prognosis of both implant and the tooth.

A Multidisciplinary Approach for Rehabilitation of Enucleated Sockets: Ocular Implants with Custom Ocular Prosthesis.

Interdisciplinary prosthodontics goes beyond our imagination into fields that have a direct effect on our total body health and quality of life. Removal of an eye has a detrimental effect on the psychology of the patient. Enucleation involves removal of the eyeball proper and leads to an enophthalmic socket with a shrunken eye, which has a crippling effect on patient's emotional and social life.

Pre-surgical Provisional Prosthesis for Immediate Non-occlusal-loaded Flapless Implant.

A 49-year-old patient reported for immediate replacement of missing maxillary anterior teeth with implant-retained prosthesis. Elevation of flap alters the mucosal level, causes discomfort, and delays the restorative procedure. To maintain the esthetics, flapless surgery was planned.

Rare combination of anomalies and its management with conservative and effective approach.

Transverse vaginal septum is a rare anomaly that results from incomplete fusion of urogenital sinus, and the vaginal parts of the Mullerian duct. Cervical atresia/dysgenesis is still a rare uterovaginal anomaly that can be congenital or acquired leading to fertility problems. Transverse vaginal septum when it coexists with cervical dysgenesis, it becomes a rare combination where management becomes highly complex.

Prevalence of partial edentulousness among the patients reporting to the Department of Prosthodontics Sri Ramachandra University Chennai, India: An epidemiological study.

Aims And Objectives: To determine the occurrence of various missing teeth pattern among the partial edentulous patients residing in Chennai who are undergoing treatment for the replacement of missing teeth in the Department of Prosthodontics, Sri Ramachandra University Chennai, India.

Settings And Design: Study was undertaken from January 2014 to October 2014, and the design was a descriptive cross-sectional study.

Materials And Methods: Five hundred and sixty-one persons aged between 13 and 87 years (267 males and 294 females) were selected, intraoral examination was done visually and results were recorded on specially designed clinical examination forms.

Dimensional change in soft tissues with complete dental prosthesis and its effect on airway space and natural head position.

Background: Insertion of the intraoral prosthesis causes deflection of the tongue, soft palate affecting the patency of the airway.

Aims: To evaluate the cephalometric soft tissue variation in tongue, soft palate, and its effect on posterior airway space in edentulous patients with the insertion of the denture.

Settings And Design: Randomized controlled trial.

Viscoelastic properties and antimicrobial effects of soft liners with silver zeolite in complete dental prosthesis wearers: an in vivo study.

Purpose: This study aimed to compare the viscoelastic properties and antimicrobial activity of a soft liner with and without silver zeolite for a period of 4 weeks.

Materials And Methods: Thirty edentulous patients wearing complete dental prostheses were selected. A uniform space was created in the intaglio surface of their maxillary prosthesis, and a soft liner without silver zeolite (control material: S) was applied.

Rehabilitation of post surgical maxillectomy defects using interim obturators-a case series.

Prosthetic rehabilitation of extensive maxillectomy defects are exigent given the difficulties faced due to loss of palatal bone,teeth and surrounding supporting tissues which help in retention, support and stability of the prosthesis. An interim maxillary obturator is a prosthesis which is made after surgical resection of a portion or all of one or both maxilla where initial healing is completed. Frequently many or all teeth in the defect area are replaced by this prosthesis.

Effect of Titanium dioxide nanoparticles on the flexural strength of polymethylmethacrylate: an in vitro study.

Context: To improve the flexural strength of polymethylmethacrylate (PMMA).

Aim: To evaluate whether the incorporation of titanium dioxide nanoparticles in polymethylmethacrylate (PMMA) increases the flexural strength and to compare the different concentrations of titanium dioxide nanoparticles and its relation to flexural strength.

Settings And Design: Study was conducted in Sri Ramachandra University utilizing 40 specimens manufactured from clear heat polymerizing acrylic resin.

Prosthetic rehabilitation of a marginally resected mandibular arch with a metal reinforced telescopic overdenture.

Success of the prosthesis after mandibular resection is related directly to the amount of the remaining bone and soft tissue present. The prognosis for mandibulectomy patients becomes less favorable as the size of the resection increases. Prosthetic rehabilitation for such patients is a challenge for clinicians.

Simplified approach for prosthetic rehabilitation of an enucleated ophthalmic socket.

Physical defects that compromise appearance or function, prevents an individual from leading a normal life, prompt the individual to seek treatment that will reinstate an acceptable normalcy. The disfigurement associated with loss of an eye can cause significant physical and emotional problems. The role of maxillofacial prosthodontists in fabricating an ocular prosthesis with acceptable esthetics and restoring normal appearance is essential.

Influence of time of placement of investments for burnout and the type of rings being used on the casting accuracy.

The sole objective of casting procedure is to provide a metallic duplication of missing tooth structure, with as great accuracy as possible. The ability to produce well fitting castings require strict adherence to certain fundamentals. A study was undertaken to comparatively evaluate the effect on casting accuracy by subjecting the invested wax patterns to burnout after different time intervals.

Hair band retained prosthetic reconstruction of bilaterally missing ears: a case of congenital atresia of external auditory canals and pinna.

Introduction: Auricular defects present reconstructive challenges, especially if they are bilateral. Surgical reconstruction provides effective results for defects; however for some patients surgical intervention is contraindicated. This case report describes an easy clinical technique to rehabilitate a patient with auricular defects.

Surface bond strength in nickel based alloys.

Bonding of ceramic to the alloy is essential for the longevity of porcelain fused to metal restorations. Imported alloys used now a days in processing them are not economical. So this study was conducted to evaluate and compare the bond strength of ceramic material to nickel based cost effective Nonferrous Materials Technology Development Center (NFTDC), Hyderabad and Heraenium S, Heraeus Kulzer alloy.

Preformed beading and boxing appliance.

Conventional beading and boxing procedure is time consuming and involves application of heat that might distort green stick compound used for border molding. Earlier studies regarding beading and boxing methods have shown usage of various materials that were disposable and that cannot be recycled. To reduce the time consumed for beading and boxing procedure and to make this procedure cost-effective by using recyclable beading material, "Preformed boxing appliance" with moldable clay meant for beading the secondary impression was used.

Osseointegration: an update.

Osseointegration, defined as a direct structural and functional connection between ordered, living bone and the surface of a load-carrying implant, is critical for implant stability, and is considered a prerequisite for implant loading and long-term clinical success of end osseous dental implants. The implant-tissue interface is an extremely dynamic region of interaction. This complex interaction involves not only biomaterial and biocompatibility issues but also alteration of mechanical environment.

Prosthetic rehabilitation of a post evisceration patient with custom made ocular prosthesis: a case report.

It is the god given right of human being to appear human, and the face is a person's visiting card. We can hide everything but we can't hide our face. Eyes are generally the first feature of the face to be noticed and the presence of a pair of eyes is quite essential to maintain the balance and the esthetics of the face.

Comparison of strain generated in bone by "platform-switched" and "non-platform-switched" implants with straight and angulated abutments under vertical and angulated load: a finite element analysis study.

Purpose: The aim of this study was to evaluate the microstrain exhibited by bone around immediately loaded, platform-switched, and non-platform-switched implants under vertical and angled loading using a finite element analysis (FEA) and also to evaluate whether platform-switched implants evoke a better response than non-platform-switched implants on a mechanical basis.

Materials And Methods: Three-dimensional finite element study was undertaken to model and analyze an immediate loaded situation. FEA was chosen for this study since it is useful in determining the stress and strain around the dental implant.

Indications of antibiotic prophylaxis in dental practice- review.

Antibiotics are frequently used in dental practice. Clinical and bacteriological epidemiological factors determine the indications of antibiotics in dentistry. Antibiotics are used in addition to appropriate treatment to aid the host defences in the elimination of remaining bacteria.

Aesthetic finger prosthesis.

Complete or partial fingers are the most commonly encountered forms of partial hand losses. Though finger amputations are commonly due to traumatic injuries, digit loss may also be attributed to congenital malformations and disease. Irrespective of the etiology, the loss of a finger has a considerable functional and psychological impact on an individual.

Load transfer in tilted implants with varying cantilever lengths in an all-on-four situation.

Background: The aim of this study was to evaluate if tilting of the distal implant at different angulations (30° and 40°) with different cantilever lengths (4 mm and 12 mm) affects the stress and strain distribution in an 'all-on-four' situation.

Methods: A completely edentulous mandible was modelled with four tapered implants placed within the interforaminal region to receive an all acrylic fixed prosthesis. The two posterior implants were tilted at an angle of 30° and 40°.

A preliminary report on the effect of a mandibular advancement device on obstructive sleep apnea using magnetic resonance imaging and polysomnography.

This preliminary study investigated the effect of a mandibular advancement device on upper airway collapsibility in seven patients with obstructive sleep apnea. Overnight polysomnography and dynamic magnetic resonance imaging were performed at the retropalatal and retroglossal levels, and the apnea-hypopnea Index(AHI), anteroposterior and lateral distances, and airway volumes were recorded. The tests were repeated following a 3-month period of wearing a customized mandibular advancement device.

Finite element analysis of stresses in fixed prosthesis and cement layer using a three-dimensional model.

Context: To understand the effect of masticatory and parafunctional forces on the integrity of the prosthesis and the underlying cement layer.

Aims: The purpose of this study was to evaluate the stress pattern in the cement layer and the fixed prosthesis, on subjecting a three-dimensional finite element model to simulated occlusal loading.

Materials And Methods: Three-dimensional finite element model was simulated to replace missing mandibular first molar with second premolar and second molar as abutments.

Incidental discovery of odontogenic keratocyst in an edentulous patient: importance of routine pre-prosthetic radiographic evaluation.

The most common modality of treatment for completely edentulous patients are conventional removable complete dentures. The protocol for fabrication of complete denture would involve a thorough clinical examination and radiographic investigation. As a routine, unless clinical findings suggest presence of remnant tooth structures, or the patient presents himself with symptoms, the radiographic investigations are overlooked.