Singapore Dental Journal最新文献

A randomized clinical trial was carried out to compare the difference in the effects of using two different mouth rinses on healing after surgical removal of wisdom teeth. One mouth rinse contained chlorhexidine with alcohol whereas the other was chlorhexidine without alcohol. Twenty-one patients without any medical conditions underwent surgical removal of their 3rd molars by the same operator on both the sides. Data were analysed by the non-parametric function test. Significant differences were shown in the pain score and the number of inflammation sites (p > 0.05). There was no significant difference in the acceptability of the two mouth rinses. In this study, nonalcohol chlorhexidine mouth rinse seemed better than an alcohol-containing chlorhexidine mouth rinse in diminishing patients' post-operative pain and wound inflammation. Non-alcohol chlorhexidine mouth rinse had similar properties without the adverse effects of alcohol, such as dryness of the mouth and addiction. Likewise, they were less likely to result in alcohol-induced pain.

Obstruction remains as an important cause of failure in the eruption of a tooth. In this article, a 15-year-old girl was presented with retained upper left primary canine (63) and first primary molar (64), while the contralateral permanent canine (13) and premolars (14 and 15) have erupted. Upon radiographic examination, a mass which was diagnosed later to be compound odontome was detected. The treatment consisted of surgical removal of the odontome, extraction of the primary canine (63) and left permanent canine (23), and transplantation of the permanent canine (23). The management of this case and the literature related to autotransplantation are discussed.

The effect of occlusion on the periodontium has been the subject of much debate. Interest on this subject has decreased over the years but has been renewed with the popularity of implant dentistry. This paper reviews the literature and explores the relationship between trauma from occlusion with periodontal disease and peri-implant bone loss. With regards to periodontal disease, there are two schools of thought on the effect that trauma from occlusion has on the periodontium. One believes that trauma from occlusion is a co-destructive factor in the initiation and progression of periodontal disease. The other believes that it is not. Up till now, there are no conclusive explanations on the association between trauma from occlusion and periodontal disease. For dental implants, current literature suggests that there is an association between occlusal overloading and peri-implant bone loss even in the absence of inflammation. However, there is a need for more randomized clinical trials to validate this relationship.

The purpose of this paper is to enumerate the Internet resources on the web available to the general dentist on bisphosphonate-associated osteonecrosis of jaws. The general dental practitioners have a key role to play in identifying patients at risk of developing bisphosphonate-associated osteonecrosis of the jaws. The problem is likely to become commonplace as the number of patients on bisphosphonate increases. The management of bisphosphonates osteonecrosis of the jaws presents a challenge to dentists as there is no effective treatment for this condition. The Internet may be a good vehicle where information can be shared and advisory disseminated.

Osteoblastoma is a rare benign neoplasm of jaws. We report a case of a recurrent osteoblastoma in the maxilla of a 34-year-old male who presented with aggressive clinical and histologic features: namely root resorption, tooth mobility, involvement of maxillary sinus, chondroid formation, host bone trapping, and lack of osteoblastic rimming. The lesion is discussed with particular emphasis on its differentiation from malignant lesions especially low-grade osteosarcoma. A systematic review of other reported cases of osteoblastoma of jaws with a note on the recurrent cases has been put forth.

The success rates of craniofacial osseointegrated implants are not uniform throughout the craniofacial area. A better understanding of their clinical behaviour is needed. This article investigates current perspectives on the application of endosseous implants in the restoration of craniofacial defects. An online search was completed for the time period from 1966 to 2007, along with a manual search, to locate relevant peer-reviewed articles and textbooks published in English. A review of published reports of craniofacial application of endosseous implants in irradiated and nonirradiated tissue sites showed a strong correlation between anatomic sites and clinical success. Maxillofacial prosthetic considerations are also reviewed.

Head and neck cancer is becoming a more recognizable pathology to the general population and dentists. The modes of treatment include surgery and/or radiation therapy. Pretreatment dental assessment should be provided for these patients before they undergo radiation therapy. There are occasions, however, whereby head and neck cancer patients are not prepared optimally and, as a result, they succumb to complicated oral adverse effects after radiation therapy. The management of radiation-induced caries, a sequelae of xerostomia has been reviewed in Part II of this series. In this article, the management of difficulty with dentures, another sequelae of xerostomia following radiation therapy is reviewed.

Head and neck cancer is becoming a more recognizable pathology to the general population and dentists. The modes of treatment include surgery and/or radiation therapy. Pretreatment dental assessment should be provided for these patients before they undergo radiation therapy. There are occasions, however, whereby head and neck cancer patients are not prepared optimally and, as a result, they succumb to complicated oral adverse effects after radiation therapy. Osteoradionecrosis (ORN) is a severe debilitating condition that impairs healing due to reduction in vascularity and osteocyte population in the affected bone. This article reviews methods of treatment used to treat ORN such as antibiotics, hyperbaric oxygen therapy, therapeutic ultrasound, surgery, and other modalities.

Head and neck cancer is becoming a more recognizable pathology to the general population and dentists. The modes of treatment include surgery and/or radiation therapy. Where possible, pretreatment dental assessment shall be provided for these patients before they undergo radiation therapy. There are occasions, however, whereby head and neck cancer patients are not prepared optimally for radiation therapy. Because of this, they succumb to complicated oral adverse effects after radiation therapy. The second last part of this series reviews and discusses the management of complication that commonly occur to the oral mucosa, i.e. mucositis.

The aim of this retrospective study was to determine the probability of success and survival as well as the incidences of specific biological and technical complications associated with fixed partial dentures (FPDs). All patients fitted with FPDs at the National Dental Center, Singapore, in the previous 5-8 years were identified through electronic records and contacted to return for a clinical examination by a prosthodontist. Eighty-five patients with a total of 99 FPDs were examined, and a satisfaction survey was also conducted. Fifty-eight (58.6%) of the FPDs were successes requiring no intervention. Thirty-two (32.3%) remained in situ but suffered some complications, while nine (9.1%) were deemed failures as they had to be removed. Of the 32 complications, one (1%) showed increased mobility due to progressive periodontitis, four (4%) had lost vitality, two (2%) required recementation, two (2%) showed recurrent caries, and 23 (23.2%) exhibited partial ceramic fractures. The 5-year probability of success was between 62.5% (95% confidence interval [CI]: 52.7, 71.2) and 68% (95% CI: 59.5, 76.0), while the 5-year probability of survival was 92.3% (95% CI: 86.5, 96.6). The incidence of caries was 5.8% (95% CI: 2.5, 11.8), and the 5-year risk for loss of abutment vitality was 4.4% (95% CI: 1.5, 9.5). FPDs with non-vital abutments and those of a longer span (5 or more units) were more likely to suffer a complication or failure.