Hari Parkash

• Master of Dental Surgery
• Managing Director at I.T.S Centre for Dental Studies & Research

Global Health Education strives to improve the health status and life expectancy of low-income and minority populations and other urban and rural areas with populations with serious unmet health needs. Global Health threats affects all of us like infectious diseases, natural and humanitarian crisis, malnutrition and contaminated foods, toxic substa...

It repoarts on a case in a5-year-old boy and reviews the relevant literature.

It describes the various oral manifestations in HIV infection.

It reports on acse of Langerhans cell histeocytosis in a 22-year-old woman which presented as a periodontal cyst and discusses its management and histological findings.

A case with unusual findings is described and it is proposed that it could be a new syndrome.

Objectives To present a comprehensive review of current literature available on Corona virus disease and dentistry, modifications required in dental and laboratory settings; and recommended disinfection protocols in current scenario. Special emphasis has been given to discuss guidelines for handling different prosthodontic procedures and implicatio...

Purpose: To evaluate and compare the positional and angular accuracy of virtual implant positions planned on cone-beam computed tomography and final implant positions achieved using a universal open guide system. Materials and methods: A dual scan of a partially edentulous jaw model along with prosthesis was done, and virtual implant planning wa...

Background: Different postdesigns and materials are available; however, no consensus exists regarding superiority for stress distribution. The aim of this study was to evaluate the effect of design and material of post with or without ferrule on stress distribution using finite element analysis. Materials and methods: A total of 12 three-dimensi...

The most frequent type of treatment for patients diagnosed with a malignant neoplasia of the oral cavity is surgical resection of the tumor. Ablative surgery may be followed by a reconstructive phase, in which the surgeon may choose between local flaps, nonvascularized bone grafts or free vascularized flaps to close the surgical site, depending on...

The study was undertaken to evaluate the reliability of different facial measurements for determination of vertical dimension of occlusion in edentulous subjects using accepted facial dimensions recorded from dentulous subjects. The hypothesis was that facial measurements can be used to obtain the vertical dimension of occlusion for edentulous pati...

Introduction: Abundant resources and techniques have been used for complete coverage crown fabrication. Conventional investing and casting procedures for phosphate-bonded investments require a 2- to 4-h procedure before completion. Accelerated casting techniques have been used, but may not result in castings with matching marginal accuracy. Aims an...

The purpose of this study was to evaluate the reliability of different anatomic reference planes in determination of Occlusal plane in dentulous and edentulous subjects with Angle’s class I and class II Maxillomandibular relationship. Eighty subjects were included in the study which was divided into four Groups based on dentition and skeletal relat...

Tumor resection of a cancer lesion produces maxillary defects that can be easily restored with an obturator to close the defect area. Postsurgical maxillary defects predispose a patient to hypernasal speech, fluid leakage into the nasal cavity, and impaired masticatory function. Therefore, the primary aims of prosthetic rehabilitation in total and...

Fractures of metal-ceramic restoration pose an esthetic and functional dilemma both for patient and the dentist. Intraoral repair systems eliminate the remake and removal of restoration. Many intraoral repair materials and surface treatments are available to repair intraorally fractured metal-ceramic restoration. Bond strength data of various mater...

The present study was conducted on the patients visiting the out-patient department of ITSCDSR, Ghaziabad with the objective of strengthening the association between periodontal disease and coronary artery disease. Sixty (60) patients,aged 40 to 60 years, were divided into 2 groups, of 30 patients each, based on their periodontal status in to perio...

To evaluate and compare the centric relation and horizontal condylar guidance using interocclusal wax and extra oral Gothic arch methods and subjective evaluation of dentures thus fabricated. Centric relation and horizontal condylar guidance was recorded by using interocclusal wax and gothic arch tracing in 28 completely edentulous patients. These...

Women smokers are likely to increase as a percentage of the total. If the percentage of women who smoke in developing countries rise to the levels of men smokers, there will be more than 500 million women smokers in the next generation. Because women who smoke die from the same tobacco-caused diseases as men, such an increase will have dramatic eff...

Prosthetic rehabilitation of acquired maxillary defects can be achieved satisfactorily if all facets of treatment planning and design considerations are taken into account before the rehabilitation process. Complications associated with maxillary defects limit treatment protocols to a great extent. The prosthodontist has to identify these problem a...

There is dearth of literature regarding the effects of oxidation heat treatment (OHT) as surface pretreatments on bond strength of base metal alloys and porcelain. Forty-five bar specimens of each two commercially available base metal alloys Mealloy and Wirorn-99 (were fabricated. Dimensions of each specimen were 15.0 × 2.0 × 0.5 mm (according to t...

Endodontically treated teeth with loss of tooth structure from cemento-enamel junction require post and core restoration for their long-term survival. Thus, an in vitro study was conducted, in which 30 extracted human maxillary central incisors, cut from cemento-enamel junction, were divided into 3 groups of 10 teeth each and restored with fiber-re...

The art of maxillofacial prosthetics restores esthetics and function in patients with gross developmental or acquired defects of face and helps them to restore hope and ambition to lead a useful life. This valuable service provided by maxillofacial prosthodontist lifts the morale of the patient and thus aids in physical well being and quality of li...

Purpose. To analyze the stress distribution in an endodontically treated maxillary central incisor restored with various post-core systems and assess the benefit of ferrule using finite element analysis. Material and Methods. Twelve models with metal ceramic crown were created based on the combination of three types of post-core systems (titanium p...

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Long-term clinical failures of cemented prosthesis depend, to a large extent, on t...

Long-term clinical failures of cemented prosthesis depend, to a large extent, on the integrity of the luting agent. The causative factors that lead to microfracture and, hence, failure of the luting agents are the stresses acting inside the oral cavity. Therefore, the present study was designed to develop an understanding of the relationship betwee...

To investigate the distribution of individual tooth impaction in general dental patients of Northern India. Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi. Hospital based crossectional study. General dental patients were examined clinically and impacted teeth were diagnosed from radiographs. The distrib...

A variety of functional tooth contact patterns exist in population of young adult patients.The purpose of the present study is to find the relationship between different lateral tooth contact patterns and dental morphology and their effect on masticatory efficiency. Forty young dentulous subjects were selected and their impression with irreversible...

The infection of the root canal system is considered to be a polymicrobial infection, consisting of both aerobic and anaerobic bacteria. Because of the complexity of the root canal infection, it is unlikely that any single antibiotic could result in effective sterilization of the canal. A combination of antibiotic drugs (metronidazole, ciprofloxaci...

The dilemma confronting many dentists today is that innovations and well-defined specializations have greatly enlarged the treatment realm for tooth preservation as well as tooth replacement. The objectives should be preservation of the remaining tooth structure, restoration of optimum function, esthetics with least invasive procedures, cost effect...

The advent of globalization has changed our perspectives radically. It presents increased understanding of world affairs, new challenges and exciting opportunities. The inequitable distribution and use of finite energy resources and global warming are just two examples of challenges that can only be addressed by concerted international collaboratio...

The ultimate objective of the fabrication of a partial prosthetic appliance is the preservation of the remaining teeth while lost function is being restored. Double crown is an effective type of retainer that provides retention, support and a splinting action between multiple abutment teeth. Double crowns with clearance fit are used to retain tooth...

The purpose of this study was to evaluate the skeletal and dentoalveolar effects of the Twin-block and bionator appliances in the treatment of Class II Division 1 malocclusions. Fifty-five girls from North India with Class II Division 1 malocclusion and the same physical growth maturation status were selected for the study. The subjects were divide...

26589304 fax; drhariparkash@yahoo.com. T he workforce is connected to a system of health care. Health care systems depend not only upon infrastructure and resources, but also on the availability of skilled human resources. The changing pattern of oral diseases, their frequency and severity, and the disparity of distribution between developing and d...

The aim of the study was to investigate alkaline phosphatase activity in the gingival crevicular fluid (GCF) during orthodontic tooth movement in humans. Postgraduate orthodontic clinic. Ten female patients requiring all first premolar extractions were selected and treated with standard edgewise mechanotherapy. Canine retraction was done using 100...

Supernumerary teeth are common in the general population and occur more frequently in-patients with family history of such teeth. Multiple supernumerary teeth are associated with cleidocranial dyplasia and Gardner syndrome. However it is rare to find multiple supernumeraries in individuals with no other associated disease or syndrome. We describe t...

These cases had been discussed having massive coronal fracture, rotation and intrusion of teeth. In case one, both the central incisors, i.e. 11 and 21 were fractured only one-third of tooth material was remaining. In case two, 21 was fractured and intruded. In case three, 12 and 21 were avulsed and 11 was rotated and intruded. These cases were suc...

Papillon-Lefevre syndrome is a rare recessive genetic disorder. The clinical manifestations include palmar-plantar hyperkeratosis with precocious rapidly progressive periodontal disease that results in premature exfoliation of primary and permanent dentitions. Patients are often edentulous at an early age. Here is the report of prosthodontic rehabi...

Adenomatoid odontogenic tumour is a benign (hamartomatous), noninvasive lesion with slow but progressive growth. The 3 variants--follicular, extrafollicular and peripheral--present with identical histological findings. This report describes a patient with a large adenomatoid odontogenic tumour in the mandible, with the involved mandibular canine be...

Purpose of study : Proper color match of a dental restoration with the adjacent teeth is important not only at the initial stage of giving the restoration but also over a longer period of time. Out of different materials Porcelain has established itself as being color stable and durable but composites are known to be susceptible to discoloration be...

Etiology of class-III malocclusion is generally believed to be genetic. A wide range of environmental factors have been suggested as contributing factors for the development of class-III malocclusion. Twin study is one of the most effective methods available for investigating genetically determined variables of malocclusion. Discordancy for class-I...

This prospective study was conducted on 24 North Indian subjects (10 Control and 14 Twin-block) to evaluate the skeletal and dentoalveolar effects of Twin-block appliance in the treatment of Class II division 1 malocclusion. The result of the present study showed that Twin-block is an effective appliance in accelerating mandibular growth. It also h...

Impactions with severely dilacerated root is seldom reported, especially the maxillary incisor. It is probably because of the high clinical difficulty of bringing the dilacerated tooth into position: most patients probably would choose extraction with replacement by prosthesis instead. However, the philosophy seems to have changed recently. We repo...

Langerhan's histiocytosis was formerly known as histiocytosis X and refers to a group of conditions characterized by the uncontrolled stimulation and proliferation of a normal antigen-processing cell, the Langerhan's cell. Mandibular involvement associated with LCH is uncommon in a young child. Most reports describing bone involvements in LCH have...

Proteus syndrome, which is a reference to the ancient Greek god Proteus, the Polymorphous, was called to the attention of pediatricians. Recognition of this syndrome has been difficult because of the variability of the syndrome's manifestations and because of its rarity. We describe a rare case of Proteus syndrome and we discuss its differential di...