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Biomedical subjects

L C Naidoo

Publications and source records attributed to L C Naidoo.

14 recordsLinked to original sources
PubMed1998

Congenital ameloblastic fibroma in association with oculoauriculovertebral spectrum.

Although orodental anomalies have been reported to occur in patients with oculoauriculovertebral spectrum, no previous publications in the English literature have been located that describe an ameloblastic fibroma in a patient with this condition. This report presents a 15-month-old female monozygotic twin with concomitant oculoauriculovertebral spectrum and a congenital ameloblastic fibroma of the mandible. A theory linking the pathogenesis of the two conditions is also raised.

Diseases in Twins↗
PubMed1997

Morphometric analysis of the insertion of the upper head of the lateral pterygoid muscle.

OBJECTIVE: This article reports on the morphometric characteristics of the upper head of the lateral pterygoid muscle. STUDY DESIGN: Several morphologic characteristics were initially examined in 40 postmortem specimens. The length of the upper head of the lateral pterygoid muscle was determined in 34 specimens. Of the 26 specimens in which the upper head of the lateral pterygoid muscle was found to be inserted into the meniscus and condyle, 22 specimens were examined microscopically to morphometrically quantify the proportion of muscle fibers to their respective insertions. RESULTS: The upper head of the lateral pterygoid muscle was approximately 33.3 mm in length and was significantly longer in males. There were no age-related differences. Approximately 29.5% of the fibers of this muscle were inserted into the meniscus of the temporomandibular joint. CONCLUSION: This study demonstrated that the insertion of the upper head of the lateral pterygoid muscle to the meniscus ranged from a fleshy mass to a few fibers. The number of fibers entering both the meniscus and the condyle decreased correspondingly as they approached the joint and could be interpreted as this muscle having a tendon of insertion into the meniscus.

Adult↗
PubMed1997

Congenital dermoid cyst of the tongue.

True dermoid cysts of the oral cavity are rare, usually presenting as midline swellings in the floor of the mouth and occasionally elsewhere in the oral cavity. This report describes the diagnosis and management of a congenital dermoid cyst of the lateral aspect of the body of the tongue in a 10-year-old girl. The theories of the pathogenesis of this cyst during embryogenesis of the tongue are also reviewed.

Child↗
PubMed1997

An evaluation of the mean cephalometric values for orthognathic surgery for black South African adults. Part II: Soft tissue.

In Part I of a two-part study, the mean measurements of hard tissue cephalometric values for orthognathic surgery for a selected sample of black South African adults were compared to the values recorded Burstone et al (1978) for caucasian North Americans and the values reported by Flynn, Ambrogio and Zeichner (1989) for African-Americans. Part II of this study compares the mean soft tissue cephalometric values for orthognathic surgery in black South African adults with the population groups studied by Legan and Burstone (1980) and Flynn et al (1989). Significant variations were found mainly in and around the mouth, the naso-labial angle and the angle of the throat of black South Africans when compared to caucasian North Americans (Legan and Burstone, 1980) and African-Americans (Flynn et al, 1989). The findings of this study may be useful in providing racially specific mean cephalometric values in the planning and treatment of dento-skeletal surgery in black South African adults.

Adult↗
PubMed1997

Third molar surgery in general dental practice.

A survey to determine the treatment procedures adopted by general dental practitioners for the removal of impacted third molar teeth was undertaken. Questionnaires were mailed to a sample of 100 practising dentists. Of the 67 per cent that responded, 41.8 per cent (28) indicated that they would attempt the procedure while the remaining 51.2 per cent (39) would not do so. Neither the length of professional experience nor whether they practised in metropolitan or country areas had a bearing on whether the impacted tooth would be removed or not. In general, South African general dental practitioners routinely removed overlying bone by means of a bur, sutured the mucosal incision wound, prescribed antibiotics, analgesics and a mouthwash, and recalled their patients for a post-operative review. Steroids were not prescribed.

Adolescent↗
PubMed1997

An evaluation of the mean cephalometric values for orthognathic surgery for black South African adults. Part 1: Hard tissue.

Maxillofacial and oral surgeons and orthodontists are currently treating an increasing number of black South African patients needing orthognathic surgical procedures. Surgical and orthodontic cephalometric analyses developed for caucasian populations has been shown to be inadequate for other racial groups (Connor and Moshiri, 1985, Briedenhann and Roos, 1988 and Flynn, Ambriogio and Zeichner, 1989). The purpose of this study was to evaluate mean measurements for black South African adults which would be comparable in diagnosis and treatment planning, to the analyses of Burstone et al., (1978) and Legan and Burstone (1980), known as Cephalometrics for Orthognathic Surgery (COGS). Lateral cephalometric radiographs of 15 male and 15 female black South African adults were evaluated for both hard and soft tissue measurements according to parameters of the COGS analyses. The results of this study showed that the cephalometric measurements established for North American caucasians by Burstone et al., (1978) and Legan and Burstone (1980) were at variance to those measurements found in a black South African population group. Thus orthodontic and orthognathic surgical treatment planning for black South Africans may be more relevant if the diagnosis is based on standard measurements specific for this particular racial group.

Adult↗
PubMed1997

Oral health finance and expenditure in South Africa.

The objective of this paper was to examine the cost of oral health in South Africa over the past decade Particular emphasis was placed on the contribution made by medical schemes which is the main source of private health care funding. Some of the problems facing this huge industry were also briefly explored. Primary aggregate data on oral health expenditure were obtained from the Department of Health, Pretoria and from the offices of the Registrar of Medical Schemes, Pretoria. The results show that in 1994, 4.7 per cent of the total health care budget was allocated to oral health. Of this amount, 14.2 per cent came from the state, 71.9 per cent from medical schemes and the remainder calculated to be from direct out-of-pocket payments. Furthermore, real expenditure for oral health by medical schemes grew robustly and almost continuously from 1984 through to 1994, generally outstripping medical inflation.

Dental Care↗
PubMed1996

Lateral pterygoid muscle and its relationship to the meniscus of the temporomandibular joint.

OBJECTIVE: The theory of internal derangement of the temporomandibular joint involves the anterior displacement of the meniscus, which is thought to be the result of hyperactivity of the lateral pterygoid muscle. There is, however, a great deal of confusion with respect to the attachment of this muscle to the meniscus. This anatomic study reexamines the meniscal attachment of the lateral pterygoid muscle, in particular, the upper head of this muscle. STUDY DESIGN: The anatomic relationship between the lateral pterygoid muscle and the meniscus was examined in the postmortem specimens of 25 males and 15 females between the ages of 7 to 85 years. RESULTS: In 65% of specimens, the upper head of the lateral pterygoid muscle was attached to the medial aspect of the capsule, meniscus, and to the pterygoid fovea of the condyle. In 27.5% of specimens, the upper head was attached solely to the condyle; in the remaining 7.5% of cases, there were other types of attachments of the lateral pterygoid muscle to the meniscus. CONCLUSION: This study confirms that the lateral pterygoid muscle has a variable attachment to the meniscus. The role of this muscle in the displacement of the meniscus is still unknown and further research into temporomandibular disorders should involve the investigation of other structures in the craniomandibular complex.

Adolescent↗
PubMed1996

Third molar surgical procedures: practices by maxillofacial and oral surgeons in South Africa.

An audit of the treatment procedures routinely adopted by maxillofacial and oral surgeons for the removal of impacted third molars under general anaesthesia was undertaken in South Africa. Most maxillofacial and oral surgeons agree on the method of bone removal, the prescribing of antibiotics, analgesic agents and mouthwashes, the suturing of the incision wound and the post-operative review of patients. The results were compared to a similar study undertaken by Falcon and Roberts (1992) in the UK. With the exception of the method of bone removal, maxillofacial and oral surgeons in both groups share a similar approach to the treatment procedures adopted in the removal of impacted third molars. Some variability, however, existed in both studies with regard to the use of intra-operative local anaesthetic agents, the administration of peri-operative steroids and the use of non-steroidal anti-inflammatory agents.

Adolescent↗
PubMed1993

The development of the temporomandibular joint: a review with regard to the lateral pterygoid muscle.

This review sets out to explore the relationship between the lateral pterygoid muscle and the meniscus. It examines the embryological evidence to explain the controversy surrounding the apparent morphological discrepancy in the attachment of the lateral pterygoid muscle to the meniscus. It shows that the contribution of the lateral pterygoid muscle to the formation of the meniscus remains in dispute. Morphogenetic studies have not been able to support either one or other viewpoint and no direct conclusions can therefore be made on the embryology of the temporomandibular joint.

Humans↗
PubMedDate not supplied

Nifedipine-induced gingival hyperplasia: non-surgical management of a patient.

A clinical report of nifedipine-induced gingivitis in a medically compromised patient is presented. This case history also describes the challenges faced by the oral health practitioner to develop an appropriate regimen of treatment for a patient in whom neither withdrawal of the drug nor substituting for it was feasible, and periodontal surgery was contra-indicated.

Adult↗