Use of the buccal fat pad for correction of intraoral defects: report of cases.
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Adenoma, Pleomorphic↗
Biomedical subjects
H S Loh
Publications and source records attributed to H S Loh.
'A bridge too far ...'. Case report.
An elderly man was assaulted and sustained facial injuries with fractures of the mandible and left zygoma. An unusual complication of aspiration of an intact four-unit metal bridge is reported. Immediate retrieval was done under general anaesthesia by rigid bronchoscopy. The technique is described. The importance of careful clinical and radiographic examination is stressed.
Bronchoscopy↗
A ten-year follow-up case report following surgical correction of anterior open bite.
A case is reported whereby an anterior open-bite was treated with the Köle osteotomy in an adult Chinese girl. This study documents cephalometrically the post-treatment changes occurring in the dento-alveolar complex over a ten year follow-up period and describes the possible mechanisms contributing to the remarkable stability of the open-bite correction.
Adolescent↗
Primitive neuroectodermal tumour in the oral cavity. Case report.
Primitive neuroectodermal tumour is regarded as a rarely seen lesion as it occurs mainly within the central nervous system. However, this neoplasm does occasionally occur elsewhere in the body. One such case which occurred in the posterior part of the palate in a child is reported. Following a combined therapeutic approach comprising surgery, radiotherapy and chemotherapy, the patient has been well for nine years since treatment.
Child↗
Mongoloid features of the permanent mandibular second molar in Singaporean Chinese.
The permanent mandibular second molar is usually described as four-cusped, two placed buccally and two lingually. It has been reported that five-cusp forms were more commonly present in dentitions of mongoloid origin. The prevalence and features of this tooth form were examined in a Singaporean sample of 380 subjects with bilateral presence of the mandibular second molars. One-hundred and sixty four cases (43.1 per cent) were found to have bilateral occurrence of five-cusp forms and thirty-four cases (8.9 per cent) with unilateral occurrence. Six-cusp forms were detected in three cases. There was almost equal prevalence in both sexes and both sides were equally involved in unilateral cases. The extra cusp was smallest, placed disto-buccally and sometimes midway at the distal border. The occlusal outline of five-cusp second molars was rectangular with a somewhat similar groove pattern to the first molar. There was an increase in the mesio-distal width of the crown. The high incidence was comparable with other studies of mongoloid dentitions and it could be considered as an important morphological and racial characteristic of the Singaporean Chinese.
Asian People↗
Incidence and features of three-rooted permanent mandibular molars.
Seven hundred and eighty-six patients of Singaporean Chinese origin requiring extractions of permanent mandibular molars were screened. Personal details, identification of the tooth and the presence or absence of an extra root were recorded. Thirty-two cases (4.1 per cent) exhibited an extra disto-lingual root. None was found in the second molar. The first molar was affected (7.9 per cent) slightly more than twice as often as the third molar (3.7 per cent). The extra root was present almost equally in both sexes with a higher presentation on the left side. Six cases had a fracture of the extra root. A comparison was made with a study done by Tratman' on the same population and with other studies involving those of Chinese and Mongoloid origin in other countries.
China↗
Histiocytosis X (Langerhans-cell histiocytosis) of the palate. Case report.
A case of histiocytosis X (Langerhans-cell histiocytosis) occurring in the maxilla of a two-year-old boy is presented. Common dental and oral conditions were considered and eliminated. Diagnosis was made through a biopsy which showed aggregates of histiocytes. Management consisted of multi-modal treatment. Full skeletal radiographic survey and review were essential to detect other possible sites of involvement. None was found in this case over a four-year review.
Child, Preschool↗
Laser therapy for a haemophiliac. Case report.
With adequate precaution, dental procedures which are likely to cause haemorrhage in haemophiliac patients may now be performed with a greatly reduced risk. A case report of a 'moderate' haemophiliac who presented with acute pericoronitis is described. The operculum associated with an erupting molar tooth was excised using a laser beam. Pre- or post-operative infusion of Factor VIII was not required. The applications and possible implications of the use of this treatment modality are discussed.
Child↗
Evaluation of soft tissue profile following intraoral ramus osteotomy in Chinese adults with mandibular prognathism.
Twenty-five Chinese adults with mandibular prognathism were treated with either the intraoral vertical subcondylar osteotomy or the bilateral sagittal split ramus osteotomy. The patients were kept in maxillomandibular fixation for 6 to 8 weeks while osteosynthesis was achieved with the use of intraosseous wiring. Serial lateral cephalograms were taken presurgery and between 12 and 26 months postsurgery, and specific soft and hard tissue points were digitized on a computer. The mean mandibular setback postsurgically was 8.4 +/- 3.2 mm, with a 5.2-degree reduction in point A-nasion-point B angle. Posterior movement of pogonion, point B and the mandibular incisal edge was accompanied by posterior movement of 95% at soft tissue pogonion (r = .96), 89% at soft tissue point B (r = .83), and 67% at labrale inferius (r = .81), respectively. The correlation between changes in the labrale superius and mandibular setback appeared to be dependent on both the amount of mandibular setback and the degree of mandibular rotation during the setback surgery. The presently reported ratios of the soft tissue response to hard tissue movement vary from those reported in white patients by other researchers, which confirms the need for different ratios for different racial types.
Adult↗
The effectiveness of CO2 laser in dental surgery--a local experience.
The CO2 laser was introduced in Singapore in 1985 for dental surgery. It delivered a novel and brilliant adjunct for management of orofacial lesions and conditions. Tissue destruction is precise, immediate and quite bloodless. Oedema is not remarkable and healing produces minimal scarring. For small mucosal lesions, a power of 5 to 10 watts is sufficient. It is particularly useful for broad-based lesions and white lesions in the oral cavity. For major oral surgery, a power of 20 watts would be adequate for surgical excision. It reduces the invasiveness and trauma of surgery and lowers post-operative complications. The effects on dental hard tissues provide an exciting area for development and research and its uses here are gaining acceptance.
Carbon Dioxide↗
Prosthodontic management of maxillofacial defects after cancer surgery.
Surgery for maxillofacial cancer often creates a defect, which may affect speech, swallowing, mastication and facial appearance. The provision of a prosthesis is one method to help restore these physiologic and psychologic functions. Prosthodontic planning and rehabilitation should be an integral part of the team management to provide not just the preservation, but a quality of life for the patient. Various types of appliances are illustrated and the role of the dental surgeon is emphasised.
Aged↗
Clinical presentation of denture hyperplasia of oral tissues.
A clinical study on the presentation of denture hyperplasia was conducted on 15 patients with particular reference to age group, use and care of dentures, type and location of the hyperplastic lesion. The pilot study shows that a greater proportion of the studied sample were in the 50-60 years age group with a majority of them being unaware of the presence of the lesion in their mouth. Eleven of them responded that they use their dentures day and night. The incidence of lesions occurring in the lower jaw compared with the upper jaw was approximately 2:1. The average duration of denture usage was 8.7 years. Correct use of dentures and regular maintenance with professional care can help prevent the occurrence of these lesions.
Adult↗
Intraoral vertical ramus osteotomy.
In corrective surgery for mandibular prognathism, the vertical ramus osteotomy, also known as the vertical subsigmoid osteotomy (VSS) is one of the simplest osteotomy to perform and therefore widely popular with oral & maxillofacial surgeons. Traditionally, the surgical approach for VSS is by the extra-oral approach although the approach may be either extraoral or intraoral. In this paper, the main advantages and disadvantages of the following three techniques, i.e. VSS via extraoral approach, VSS via intraoral approach and the sagittal split ramus osteotomy will be discussed. The vertical ramus osteotomy via the intraoral approach is not usually performed in Singapore until recently. The authors would like to present the observations and a surgical technique employed by them to perform VSS osteotomy via an intraoral approach.
Humans↗
Profile changes following anterior subapical osteotomy in Chinese adults with bimaxillary protrusion.
Nineteen adult Chinese patients, aged 18 to 28 years, who sought treatment for bimaxillary protrusion were treated with combined maxillary and mandibular anterior subapical osteotomy and the extraction of one premolar in each quadrant. Intraoral cephalograms were taken pretreatment and an average of 19.8 months posttreatment. Significant cephalometric soft tissue changes (P less than .01) included increase at the nasolabial angle, reduction of both the upper and lower lip protrusions, lengthening of the upper lip, and decrease in the interlabial gap. The predictable success and the fact that these improvements in facial profile usually can be achieved in as little as 3 to 9 months make this mode of addressing bimaxillary protrusion a viable alternative to orthodontic treatment of adult patients with bimaxillary protrusion.
Adolescent↗
Migration of unerupted mandibular premolars.
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Adult↗
The position of the apical foramen of the permanent incisors.
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Humans↗
Long-term dental management of cleft patients (Part 1).
This review paper examines the problems associated with the cleft patient and presents a scheme of management. Timing of each procedure is important, with particular emphasis on speech and maxillary development. The role of orthodontics is discussed.
Adolescent↗
Dyskeratosis congenita in two male cousins.
Dyskeratosis congenita is reported in two male Singaporean Chinese cousins. The family pedigree is presented. Lichen planus or lichenoid lesions, instead of leukoplakia, was the manifestation in the oral cavity. The mode of inheritance and the differential diagnosis of Fanconi's anaemia are discussed. Dental findings are emphasised as such information is lacking in previously reported cases. One of the subjects expired of aplastic anaemia, which together with oral malignancy, is one fatal complication of this disease.
Child↗