MyMedR

Odontogenic keratocyst: a study of 53 cases in Malaysia

Siar CH, Ng KH, Murugasu P

Ann Dent, 1986;45(2):15-8.

Matched MeSH terms: Jaw Diseases/ethnology*

Combination of Rigid and Nonrigid Fixation Versus Nonrigid Fixation for Bilateral Mandibular Fractures: A Multicenter Randomized Controlled Trial

Rughubar V, Vares Y, Singh P, Filipsky A, Creanga A, Iqbal S, et al.

J Oral Maxillofac Surg, 2020 Oct;78(10):1781-1794.

PMID: 32589939 DOI: 10.1016/j.joms.2020.05.012

PURPOSE: We aimed to compare complication rates and functional outcomes in patients with bilateral mandibular fractures treated with different degrees of internal fixation rigidity.

PATIENTS AND METHODS: This international, multicenter randomized controlled trial included adults with bilateral mandibular fractures located at either the angle and body, angle and symphysis, or body and symphysis. Patients were treated with either a combination of rigid fixation for the anterior fracture and nonrigid fixation for the posterior fracture (mixed fixation) or nonrigid fixation for both fractures. The primary outcome was complications within 6 weeks after surgery. Secondary outcomes were complications within 3 months, Helkimo dysfunction index, and mandibular mobility at 6 weeks and 3 months after surgery.

RESULTS: Of the 315 patients enrolled, 158 were randomized to the mixed fixation group and 157 to the nonrigid fixation group. The overall complication rate at 6 weeks in the intention-to-treat population was 9.6% (95% confidence interval [CI], 5.3% to 15.6%) in the mixed fixation group and 7.8% (95% CI, 4.0% to 13.5%) in the nonrigid fixation group. With an unadjusted odds ratio of 1.25 (95% CI, 0.51 to 3.17), there were no statistically significant differences in complication rates between the 2 groups (P = .591). A multivariable model for complication risk at 6 weeks found no significant differences between treatment groups, but patients with moderate or severe displacement had a higher complication rate than those with no or minimal displacement (adjusted odds ratio, 4.58; 95% CI, 1.16 to 18.06; P = .030). There were no significant between-group differences in complication rates at 3 months. Moreover, no significant differences in Helkimo dysfunction index and mandibular mobility index at 6 weeks and 3 months were found between groups according to treatment allocated and treatment received.

CONCLUSIONS: A combination of rigid and nonrigid fixation in patients with bilateral mandibular fracture has similar complication rates and functional outcomes to nonrigid fixation for both fractures.

Matched MeSH terms: Jaw Fixation Techniques*

Fulltext The radiographic appearance of ameloblastoma in Malaysians

Yaacob H

Singapore Med J, 1991 Feb;32(1):70-2.

PMID: 2017711

The radiographs of fifteen Malaysian patients with presenting ameloblastoma aged between 20-55 years (average 35 years) were studied for any peculiar local features. The most common features were cortical plate expansion (80%), corticated scalloped margin (67%), multiloculation (87%), and resorption of tooth roots (47%). The latter two features are constantly found in advanced tumour stage. As pain was not a frequent complaint, many Malaysian patients seek treatment only at a very late stage after the tumours have reached large dimensions. Although ameloblastomas may be diagnosed often through radiographs, it should not be relied upon solely.

Matched MeSH terms: Jaw Neoplasms/radiography*

Fulltext Adenomatoid odontogenic tumour: gross and histogical examination of 45 cases

Siar CH, Ng KH, Murugasu P

Singapore Med J, 1987 Apr;28(2):180-9.

PMID: 3629275

This paper represents a reappraisal of the gross and histological features of 45 cases of adenomatoid odontogenic tumours as observed under conventional light and fluorescence microscopy. The findings conformed largely to those of previous studies. Usage of the term adenomatoid odontogenic tumour in preference to its old name 'adenoameloblastoma' is emphasized. The differential diagnosis of this entity from the ameloblastoma and salivary gland tumours is discussed.

Matched MeSH terms: Jaw Neoplasms/pathology

Unsplinted Attachment Systems and Peri-implant Outcomes in Two-implant-retained Mandibular Overdentures: A Systematic Review of Randomized Controlled Trials

Patil PG, Seow LL, Kweh TJ, Nimbalkar S

J Contemp Dent Pract, 2021 Nov 01;22(11):1346-1354.

PMID: 35343463

AIM: The purpose of this review is to compare randomized clinical trials evaluating the peri-implant tissue outcomes using different unsplinted attachment systems in two implant-retained mandibular overdentures.

BACKGROUND: Literature lacks information on various unsplinted attachment systems and their effect on peri-implant tissue health. A focus question (as per PICOS) was set as follows: Does one particular unsplinted attachment system (I) compared with another (C) results in better peri-implant outcomes (O) in two implant-retained mandibular overdentures (P) using randomized controlled trials (RCTs) (S)? The literature search was conducted in the PubMed, MEDLINE and Cochrane Central Register of Controlled Trials (CENTRAL) databases between January 2011 and December 2021. The keywords used were "denture, overlay," "denture," "overlay" AND "dental prosthesis, implant supported," "dental implants," "dental implant abutment design" AND "jaw, edentulous," "mouth, edentulous" AND "mandible." Only RCTs on two implant-retained mandibular overdentures using unsplinted attachment systems measuring peri-implant tissue outcomes with minimum 1-year follow-up were selected. In total, 224 studies were identified in initial search, and 25 were shortlisted for full-text evaluation. Four studies were included for systematic review upon considering inclusion and exclusion criteria. The risk of bias was evaluated using Cochrane Risk of Bias Tool 2.0 (RoB 2.0).

REVIEW RESULTS: A total of 41 patients received ball attachments (in 3 studies), 36 patients received low-profile attachments (in 3 studies), 16 patients received magnet attachments (in 1 study), and 13 patients received telescopic attachments (in 1 study). All four studies used standard sized implants, however, differed in implant manufacturers. Two studies which compared ball attachments low-profile attachments revealed-similar peri-implant tissue health parameters but differed in crestal bone-level changes. One study compared ball with telescopic attachments and revealed similar results in crestal bone-level changes and all four peri-implant tissue health parameters. Single study compared magnets with low-profile attachments and shown lesser bone loss with magnet attachments. Single study was judged to have low risk of bias, single with some concerns, and remaining two to have high risk of bias.

CONCLUSION: Gingival index and bleeding index of the patients were not influenced by any of the unsplinted overdenture attachment (stud, magnet, telescopic) system. Inconclusive results found among the studies evaluated comparing crestal bone loss and plaque index.

CLINICAL SIGNIFICANCE: This review manuscript has simplified comparative analysis of different unsplinted attachment systems used in two implant mandibular overdentures to help clinicians choose correct system in such situation.

Matched MeSH terms: Jaw, Edentulous*

Patterns of expression of intermediate filaments and S-100 protein in desmoplastic ameloblastoma

Siar CH, Ng KH

J Nihon Univ Sch Dent, 1993 Jun;35(2):104-8.

PMID: 7692015

Seventeen cases of desmoplastic ameloblastoma were examined immunohistochemically. Immunoperoxidase techniques were applied for detection of keratin, desmin, vimentin and S-100 protein expression in these tumors. The tumor epithelium of desmoplastic ameloblastoma exhibited weak, focal, inconstant keratin staining, weak, variable expression of S-100 protein, desmin immunoreactivity of mild to moderate intensity and vimentin non-reactivity. The pertinent literature on the immunohistochemistry of ameloblastomas is briefly reviewed.

Matched MeSH terms: Jaw Neoplasms/immunology; Jaw Neoplasms/pathology; Jaw Neoplasms/chemistry*

Dental health in Malaysia

Majid ZA

Int Dent J, 1984 Dec;34(4):261-5.

PMID: 6597132

Three epidemiological surveys have been carried out in Malaysia since 1971. All showed a high level of caries prevalence. Ninety per cent of school children between the ages of 6 and 18 suffered from dental caries, with a DMFT of approximately 3 and a dft of approximately 2. Ninety-five per cent of the adult population had caries experience, with the mean DMFT being 13.2. Approximately 55 per cent of children showed the presence of gingivitis with the mean number of inflamed gingival units per child ranging from 1.9 to 2.8, while 72.4 per cent of adults had some form of periodontal disease with 29 per cent having pockets deeper than 3 mm. The OHI-S score for adults was 2.2 and 81 per cent used toothbrushes to clean their teeth. A further 5.1 per cent used twigs and fingers with powdered charcoal or salt. One-third of the child population needed orthodontic treatment, with 0.3 per cent examined in peninsular Malaysia having cleft lip or palate or both. In the adult population 10.4 per cent of those examined required some form of orthodontic treatment. Twenty per cent of the children in the survey were in need of dentures; 54.7 per cent of the adults were either in need of dentures or were wearing dentures. Of these 25 per cent had complete dentures. The smoking habit was most commonly associated with pre-cancerous/cancerous lesions with alcohol consumption a close competitor; 114 adults, that is 1.3 per cent of those examined, suffer from leukoplakia but only one case of oral cancer was detected.(ABSTRACT TRUNCATED AT 250 WORDS)

Matched MeSH terms: Jaw, Edentulous/epidemiology; Jaw, Edentulous, Partially/epidemiology

Fulltext Clinical characteristics of bimaxillary protrusion in different population

Naili Hayati Binti Abdul Mukti, Noviaranny, Indah Yuri, Venkiteswaran, Annapurny, Sarah Haniza Binti Abdul Ghani

Compendium of Oral Science, 2017;4(1):1-7.

MyJurnal

In this paper, we discussed the characteristic of bimaxillary protrusion in different population. We also incorporated about aetiology and management of bimaxillary protrusion. It is importance to understand the characteristics of skeletal and dental of bimaxillary protrusions in a specific population, in order to decide whether to treat by orthodontic camouflage only, or combination with orthognathic surgery and orthodontics.

Matched MeSH terms: Jaw Abnormalities

Fulltext The incidence of tori in Malaysians- a retrospective analysis

Shareif Alan, Mohammed Subhi

International Medical Journal Malaysia, 2017;16(21):15-15.

MyJurnal

The aim of this study was to determine the incidence of torus palatinus and torus
mandibularis in Malaysians. The objectives are to evaluate the incidence of tori according to
ethnicity, to assess the incidence of tori according to gender and to determine the incidence of
torus palatinus vs torus mandibularis. (Copied from article).

Matched MeSH terms: Jaw Diseases

Fulltext Endoscopic-assisted Enucleation of Radicular Cysts - A Case Report

Kahairi A, Ahmed Khan S, Amirozi A

Malays J Med Sci, 2010 Jan;17(1):56-9.

PMID: 22135528

The standard management for the majority of benign jaw cysts is enucleation, marsupialisation, curettage and decompression. Enucleation has the advantage that the whole specimen is sent for microscopic evaluation so that more sinister pathological processes (i.e. squamous cell carcinoma) may not be missed. In a large cystic lesion, enucleation is still possible, but technical difficulties might be encountered. In such instances, inevitable damage can occur to the surrounding structures. We report a case of a large radicular cyst of the maxilla that was enucleated via endoscopic assistance through the Caldwell Luc approach.

Matched MeSH terms: Jaw Cysts

Fulltext A retrospective clinicopathological study of 59 osteogenic sarcoma of jaw bone archived in a stomatology unit

Ajura AJ, Lau SH

Malays J Pathol, 2010 Jun;32(1):27-34.

PMID: 20614723 MyJurnal

To determine the clinicopathological features of osteogenic sarcomas of the mandible and maxilla.

Matched MeSH terms: Jaw Neoplasms/epidemiology*; Jaw Neoplasms/pathology*

Fulltext Clinicopathological study of dentigerous cysts in Singapore and Malaysia

Yeo JF, Rosnah BZ, Ti LS, Zhao YY, Ngeow WC

Malays J Pathol, 2007 Jun;29(1):41-7.

PMID: 19105328 MyJurnal

This was a retrospective study of dentigerous cysts in people from the Singapore-Malaysian region. The purpose of this study was to present the clinicopathologic features of dentigerous cysts in the Oriental population and to compare these data with those from other reported studies. Biopsy records from 1981 to 1993 of 119 cases of dentigerous cysts from patients in Malaysia and Singapore showed that 36.1% of patients were female and 63.9% patients were male. Among patients with cysts, 70.5% were Chinese, 23.2% were Malays, 2.7% were Indian and 3.6% were other ethnic groups. The mean age of these patients was 30.2 +/- 17.3 years with a peak incidence occurring in the second and third decades. The location of the lesions was almost equal to the maxilla (50.9%) and the mandible (49.1%). There was a marked predilection for the posterior mandible (42.7%) followed by the anterior maxilla (38.2%). Histologically, 90.8% of the cysts were lined by a non-keratinised stratified squamous epithelium. The cyst linings were mainly thin (90.0%) with 38.7% of cases having a mixed thick and thin lining. Mucous metaplasia was observed in 9 (7.6%) cases. Rushton bodies were seen in 3.4% of cases. Cholesterol clefts in the epithelial lining and lumen were found in 16.8% cases while 12.6% of cases exhibited cholesterol clefts in the cyst wall. Other cellular structures within the cyst wall were lymphocytes (66.4%), plasma cells (52.1%), Russell bodies (16.0%) and histiocytes (4.2%). Odontogenic keratocysts were observed in 5.0% of cases. One case of adenomatoid odontogenic tumour was also observed. Epithelial atypia was seen in 9.2% of cases, islands of stratified squamous epithelial cells in 8.4% of cases while one case showed a combination of these two features. In conclusion, some clinical features seen in this study are similar to that for the Caucasian population such as prevalence in male, peak incidence in the second and third decades and the predilection for the posterior mandible and anterior maxilla. Histopathologically, odontogenic keratocyst and adenomatoid odontogenic tumour were observed in dentigerous cysts.

Matched MeSH terms: Jaw Diseases/epidemiology*; Jaw Diseases/pathology*

Fulltext Progressive septal and palatal perforation secondary to intranasal cocaine abuse

Gendeh BS, Ferguson BJ, Johnson JT, Kapadia S

Med J Malaysia, 1998 Dec;53(4):435-8.

PMID: 10971991

Septal perforation from intranasal cocaine abuse is well recognised. We present a case of progressive septal as well as palatal perforation. Progression from septal perforation to palatal perforation occurred after cessation of intranasal cocaine abuse. This patient had a weakly positive cytoplasmic antineutrophilic cytoplasmic antibody (C-ANCA) but no histologic evidence of Wegener's Granulomatosis. The differential diagnosis for septal and palatal perforation is reviewed. This case represents the fifth reported case of palatal perforation secondary to cocaine abuse in the literature, and the second associated with positive C-ANCA.

Matched MeSH terms: Jaw Diseases/chemically induced*; Jaw Diseases/pathology

Clinicopathological study of peripheral odontogenic fibromas (WHO-type) in Malaysians (1967-95)

Siar CH, Ng KH

Br J Oral Maxillofac Surg, 2000 Feb;38(1):19-22.

PMID: 10783442

Analysis of case records of 46 patients with peripheral odontogenic fibroma (1967-95) diagnosed in the Division of Stomatology, Institute for Medical Research, Kuala Lumpur, disclosed a relatively young age of onset (mean, 32.2 years; range 5 months-64 years; peak incidence second decade of life), a slight female preponderance (M:F ratio 1:1.3), no racial predilection, a slight bias towards location in the mandible (52%) and a wide histomorphological range. All cases were treated by simple excision. Follow-up records were generally not available, so we do not know what the recurrence rate is.

Matched MeSH terms: Jaw Neoplasms/epidemiology; Jaw Neoplasms/pathology*

Calcifying odontogenic cysts in peninsular Malaysia. A report of 30 cases

Ng KH, Siar CH, Murugasu P

Ann Dent, 1986;45(2):19-22.

PMID: 3468872

Matched MeSH terms: Jaw Neoplasms/epidemiology; Jaw Neoplasms/pathology*

A new concept in denture design for patients with few remaining teeth: case reports

Ling BC

Quintessence Int, 1995 Dec;26(12):871-7.

PMID: 8596818

This article presents an alternative to the conventional swing-lock de sign of removable partial denture construction. It incorporates the principles of sectional dentures as well as the swing-lock concept and overcomes some of the limitations of conventional swing-lock dentures. I-bar struts and stainless steel keepers form part of the first section of the denture. The second part of the denture consists of the denture base with the artificial teeth and magnetic retention units. This system has been used successfully in a number of patients whose situations were suitable for the conventional swing-lock design.

Matched MeSH terms: Jaw, Edentulous, Partially/rehabilitation*; Jaw, Edentulous, Partially/therapy

Treatment of a maxillary dento-alveolar defect using an immediately loaded definitive zygoma implant-retained prosthesis with 11-month follow-up: a clinical report

Baig MR, Rajan G

J Oral Implantol, 2010;36(1):31-5.

PMID: 20218868 DOI: 10.1563/AAID-JOI-D-09-00062

This article describes the dental implant-based rehabilitation of a partially edentulous patient with a unilateral maxillary dento-alveolar defect. A screw-retained prosthesis with a modified design was fabricated on zygomatic and regular dental implants. One section of the implant prosthesis has cemented crowns and the other section is conventional screw-retained. The design of the prosthesis overcame the hard and soft tissue deficit and provided the desired esthetics.

Matched MeSH terms: Jaw, Edentulous, Partially/rehabilitation*; Jaw, Edentulous, Partially/surgery

A clinicopathologic study of odontomas: Malaysian findings

Ng KH, Siar CH

J Nihon Univ Sch Dent, 1997 Dec;39(4):171-5.

PMID: 9476429

This report reviews the clinicopathologic characteristics of 104 cases of odontomas diagnosed in the Division of Stomatology, Institute for Medical Research, Kuala Lumpur, over a 29-year period (1967-1995). The results showed no real predilection in terms of sex (M:F ratio, 1:1), race (45.2% Malays, 40.4% Chinese, 10.6% Indians and 3.8% other races) or site (maxilla:mandible ratio, 1: 1.04) distribution. The mean age at presentation was 24.8 years and the age range was 3-74 years. There were 102 intraosseous and 2 extraosseous odontomas. Swelling was the most common presenting complaint. The majority of cases (81.9%) were clinically diagnosed as odontomas. The treatment of choice was surgical enucleation. Compound (43.3%) and complex (35.5%) odontomas were the two most common histological types encountered. The present findings correlate favorably with reported studies from other geographic areas.

Matched MeSH terms: Jaw Neoplasms/epidemiology; Jaw Neoplasms/pathology*; Jaw Neoplasms/surgery

Fulltext Prevalence of torus palatinus and torus mandibularis among Malay population

Hiremath VK, Husein A, Mishra N

J Int Soc Prev Community Dent, 2011 Jul;1(2):60-4.

PMID: 24478956 DOI: 10.4103/2231-0762.97704

The aims of this study were to determine the prevalence, size, shape, and location of torus palatinus (TP) and torus mandibularis (TM), and to assess their sex-related and age-related differences in the Malay population. Sixty-five subjects were assessed for the presence of both tori at the School of Dental Sciences University Sains Malaysia. The prevalence of TP was 38-63% and that of TM was 1-10%. TP was frequently more common in females than males (90.9% versus 9.1%; P < 0.05) and was frequently found in medium sizes, spindle shaped, and was often located at the combined premolar to molar areas. The prevalence of TM was not significantly different in males and females (33.3% versus 66.7%; P = 0.523), occurred most commonly in bilateral multiple form, and was often located at the canine to premolar area.

Matched MeSH terms: Jaw Diseases

Fulltext Ameloblastic carcinoma: A case with cervical node and pulmonary metastases

Khoo SP, Ong ST

Ann Dent, 1998;5(1):49-52.

MyJurnal

Odontogenic carcinomas of the jaws are subclassified into malignant ameloblastoma, ameloblastic carcinoma and primary intraosseous carcinoma arising from within the bone. These may arise from residual islands of epithelium derived from dental lamina or epithelial lining of dental cysts. Ameloblastic carcinoma is extremely rare. An aggressive case of ameloblastic carcinoma occumng in a 59-year-old Malay man is presented. Wide excision of the primary lesion with radical neck dissection was carried out. He developed lung metastasis 4 months post-operatively. Despite chemotherapy upon discovery of lung metastasis, he expired 7 months following the initial diagnosis.

Matched MeSH terms: Jaw

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