PubMed Health⌕ Search

Biomedical subjects

Hari Parkash

Publications and source records attributed to Hari Parkash.

16 recordsLinked to original sources
PubMed2006

Skeletal and dentoalveolar effects of Twin-block and bionator appliances in the treatment of Class II malocclusion: a comparative study.

INTRODUCTION: 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. METHODS: 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 divided among a Twin-block group (n = 25), a bionator group (n = 20), and a control group (n = 10). Pretreatment and posttreatment lateral cephalometric radiographs of the treatment group subjects, and prefollow-up and postfollow-up radiographs of the control group subjects, were traced manually and subjected to the pitchfork analysis. RESULTS: Statistical software was used for 1-way analysis of variance and multiple comparisons (post-hoc test, Bonferroni). A P value of .05 was considered statistically significant. Neither the Twin-block nor the bionator appliance significantly restricted forward growth of the maxilla (P = .476). Mandibular growth in the Twin-block subjects was significantly greater than in controls (P = .005). Mandibular growth was comparable in the control and the bionator subjects. Molar correction, overjet reduction, and proclination of the mandibular incisors were significantly greater (P = .000) in the treated subjects compared with the controls. CONCLUSIONS: Both the Twin-block and bionator appliances were effective in correcting molar relationships and reducing overjets in Class II Division 1 malocclusion subjects. However, the Twin-block was more efficient than the bionator in the treatment of Class II Division 1 malocclusion.

Age Factors↗
PubMed2005

Managing morphologically atypical impacted teeth orthodontically.

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 report two cases one in which an impacted central incisor was brought in the arch by orthodontic traction. In the second case the impacted premolar was brought into the arch and was shaped as a mandibular canine for achieving a good functional occlusion.

Anodontia↗
PubMed2005

Orthopedic and orthodontic effects of Twin-block appliance.

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 helped dramatically in molar correction and overjet reduction in Class II division 1 malocclusion subjects.

Cephalometry↗
PubMed2005

Adenomatoid odontogenic tumour: review and case report.

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 being pushed to the contralateral side. The paper also provides a refresher for general dental practitioners about various diagnostic aspects of this tumour and highlights the controversies regarding its origin and management in light of recent findings.

Adolescent↗
PubMed2004

Bilateral dentigerous cyst associated with polymorphism in chromosome 1qh+.

Non-syndromal bilateral dentigerous cysts are rare. It is conceivable that they are either under-recognized or under-reported. In this article we report the unusual occurrence of non-syndromic bilateral dentigerous cysts associated with mandibular third molars with polymorphism in chromosome 1qh+. It is suggested that in non syndromal cases of bilateral dentigerous cysts karyotyping should be done to confirm the association with chromosomal 1 anomaly.

Adolescent↗
PubMed2004

Effects of timing and number of palate repair on maxillary growth in complete unilateral cleft lip and palate patients.

This cross-sectional study was conducted on 40 subjects to investigate the effects of timings and number of palate surgeries on maxillary growth in complete unilateral cleft lip and palate patients. The number of surgeries performed for palate repair was not an important growth inhibiting factor of maxilla, rather the age at which the initial palate surgery was performed for palate repair was an important factor in influencing maxillary growth.

Adolescent↗
PubMed2004

Orthodontic treatment of impacted anterior teeth due to odontomas: a report of two cases.

Two cases are presented where the odontomas had caused the impaction of the anterior teeth and required a combined surgical and orthodontic treatment to bring these teeth into the arch. In the first case a large a complex odontome had caused the impaction of the right central incisor, lateral incisor and canine. In the second case a compound odontome blocked the eruption pathway of the right central incisor. It is emphasised that radiographic examination of all pediatric patients that present clinical evidence of delayed permanent tooth eruption or temporary tooth displacement with or without a history of previous dental trauma should be performed. Early diagnosis of odontomas allows adoption of a less complex and less expensive treatment and ensures a better prognosis.

Adolescent↗
PubMed2004

Orthodontic assisted tooth eruption in a dentigerous cyst: a case report.

In an orthodontic practice, it is common to deal with impacted teeth, which are one of the most difficult situations dealt with by dentists. This case report describes the surgical and orthodontic management of the impacted teeth in a large dentigerous cyst. In the initial stage of treatment, the cyst was marsupialized over 7 months. After decompression of the cyst, spontaneous eruptions of the impacted tooth were noticed. Then, they were orthodontically brought into the proper occlusion.

Adolescent↗
PubMed2004

Secondary bone grafting in cleft lip and palate with eruption of tooth into the graft: a case report.

Secondary bone grafting in cleft lip and palate patients is performed preferably before the eruption of permanent canine in order to provide adequate periodontal support for eruption and preservation of the teeth adjacent to the cleft. Presented here with is a case of unilateral cleft lip and palate, which was followed up from birth to 15 years of age. The role of an orthodontist in the team approach for management of such anomalies is described. Also discussed in detail is the entire range of treatment procedures the child underwent, especially the role of secondary bone grafting.

Alveoloplasty↗
PubMed2003

Genetics of cleft lip and palate revisited.

Cleft lip with or without cleft palate (CL/CP) is one of the most common structural birth defects with treatment including multiple surgeries speech therapy, and dental and orthodontic treatments over the first 18 years of life. Providing care for these patients and families includes educating patients and parents about the genetics of CL/CP, as well as meeting the immediate medical needs. Attempts at identifying susceptibility loci via family and case-control studies have proved inconsistent. It is likely that initial predictions of the complex interactions involved in facial development were underestimated. The candidate gene list for CL/P is getting longer and the need for an impartial systematic screening technique, to implicate or refute the inclusion of particular loci, is apparent. So we are faced with the question "Can this complex trait be too complex?" The aim of this review is to make the dentist aware of the differences between syndromic and non-syndromic cleft as well as understanding the etiological variation in cleft lip with and without cleft palate. This will aid the dentist in diagnosis and give proper genetic counseling to parents and patients of cleft lip and palate.

Adolescent↗
PubMed2003

Orthodontic treatment of a case of Aarskog syndrome.

Aarskog syndrome is a rare syndrome with a typical triad of facial, digital and genital characteristics. Orthodontic treatment of a patient with Aarskog syndrome has not been documented in literature till date. This case report shows that an individual with Aarskog syndrome can be an excellent orthodontic patient and should not be excluded from the general patient population. A stable occlusion can be achieved with acceptable profile and soft tissue contours in these patients as well.

Adolescent↗
PubMed2002

1.3 Development of professional competences.

Competency-based education, introduced approximately 10 years ago, has become the preferred method and generally the accepted norm for delivering and assessing the outcomes of undergraduate (European) or predoctoral (North America) dental education in many parts of the world. As a philosophical approach, the competency statements drive national agencies in external programme review and at the institutional level in the definition of curriculum development, student assessment and programme evaluation. It would be presumptuous of this group to prescribe competences for various parts of the world; the application of this approach on a global basis may define what is the absolute minimum knowledge base and behavioural standard expected of a 'dentist' in the health care setting, while respecting local limitations and values. The review of documents and distillation of recommendations is presented as a reference and consideration for dental undergraduate programmes and their administration.

Competency-Based Education↗
PubMed2002

Dentofacial characteristics in Apert syndrome: a case report.

Apert's syndrome is a developmental malformation characterized by craniosynostosis, a cone shaped calvarium, midface hypoplasia, pharyngeal attenuation, ocular manifestations and syndactyly of the hands and feet. The prodromal characteristic for the typical craniofacial appearance is early craniosynostosis of the coronal suture, cranial base and an agenesis of the sagittal suture. These craniofacial characteristics predispose the patient to maxillary transverse and sagittal hypoplasia with concomitant dental crowding, a pseudo cleft palate and a skeletal and dental anterior open bite. A case of Apert syndrome is presented with special emphasis on craniofacial characteristics and multidisciplinary approach to treatment. The differences between Apert and Crouzon's syndrome are highlighted.

Acrocephalosyndactylia↗