bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cemento‐ossifying fibroma with mandibular fracture. Case report in a young patient
Authors: Ong Ah Hup M. , Siar Chong Huat 
Published: March 2008

AbstractThe cemento‐ossifying fibroma is classified as an osteogenic neoplasm of the jaws. It commonly presents as a progressively growing lesion that can attain an enormous size with resultant deformity if left untreated. A case of a large cemento‐ossifying fibroma involving the left mandible is described in a 15 year old male patient. The clinical, radiograhic and histological features as well as surgical findings are presented. The treatment of choice of this lesion is also emphasized. Two years after surgery, there was no evidence of recurrence and the transosseous wire used to immobilize the fracture was found to be completely buried in the jaw bone.
Candida‐associated denture stomatitis. Aetiology and management: A review. Part 3. Treatment of oral candidosis
Authors: Webb B. C. , Thomas C. J. , Willcox M. D. P. , Harty D. W. S. , Knox K. W. 
Published: March 2008

AbstractTreatment of oral candidosis with topical antifungal agents such as nystatin and amphotericin B is effective initially. However, medication can produce side effects in some patients and when therapy is stopped the condition can recur. Alternative treatment involving the use of antiseptics and disinfecting agents has been shown to play an important role in the control of dental plaque. The use of sodium hypochlorite as an overnight denture soak has been shown to eliminate denture plaque and recent investigations have demonstrated that microwave irradiation of dentures at a specified setting and exposure time is bactericidal and candidacidal.
Dens evaginatus on a wisdom tooth: A diagnostic dilemma. Case report
Authors: Ngeow Wei Cheong , Chai Wen Lin 
Published: March 2008

AbstractPericoronitis is the most common odontogenic problem associated with the wisdom tooth in young men and women. Patients may present with problems associated with infection, swelling and pain. However, other associated pathology such as caries, periodontal disease and referred pain from the temporomandibular joint must be investigated when treating pain from the wisdom tooth. The authors wish to present a case in which the pain from a wisdom tooth was due to a fractured dens evaginatus. The importance of this dental anomaly should not be overlooked.
The effect of cleaning on blood contamination in the dental surgery following periodontal procedures
Authors: Edmunds Louise M. , Rawlinson Andrew 
Published: March 2008

AbstractBlood contamination of 16 surfaces in the dental surgery was investigated using the Kastle‐Meyer test for haemoglobin, after three types of periodontal procedures had been performed on a total of 30 patients. The effect of cleaning surfaces contaminated by blood was investigated using the same test. Cleaning materials used in the dental surgery were tested to rule out the possibility of false positive outcomes and the sensitivity of the test was determined prior to the study. The results show a marked variation in the degree of contamination and efficacy of cleaning following treatment. Overall, root planing was associated with the most widespread and frequent blood contamination and gingival surgery the least. The surgery work surface, edge of the spittoon, aspirator tube and ultrasonic scaler handpiece into which the ultrasonic insert fits, were the most frequently contaminated surfaces. The work surface, dentist's pen, light switch and handle were cleaned most effectively. The least effectively cleaned surfaces were the water dispenser switch, aspirator tube, bracket table and ultrasonic scaler handpiece. Methods for reducing this potential source of crossinfection are discussed.
The effects of early orthodontic force application on pulp test responses
Authors: Hall C. J. , Freer T. J. 
Published: March 2008

AbstractThe effects of orthodontic tooth movement on pulpal responses are of interest to the clinician. Alterations to pulpal physiology may result in altered responses to external stimuli. This pilot project tested a small group of orthodontic patients during the early stages of treatment. Heat, cold and electrical stimuli were applied prior to treatment, after the placement of fixed appliances and after one month of force application. A smaller group was tested after two months of force application. One month after force application there was a lack of response to electrical stimulation but there was continued response to thermal stimulation. The lack of response to electrical stimulation continued in the smaller group up to two months. The results suggest that the outcome of electric pulp testing during orthodontic treatment should be interpreted cautiously. Thermal testing will offer more reliable data.
Comparison of exposed dentinal surfaces resulting from abrasion and erosion
Authors: Bell Emma Jane , Kaidonis John , Townsend Grant , Richards Lindsay 
Published: March 2008

AbstractThe aim of this study was to compare the shape of exposed dentinal surfaces caused by abrasion and erosion with a view to developing a diagnostic clinical test. The study material consisted of 80 natural teeth and 129 dental models obtained from Australian Aborigines known to display considerable dental abrasion due to their diet, and dental models of 37 Caucasians diagnosed with dental erosion through detailed history and dietary analysis. Polyvinyl siloxane impressions were obtained of all occlusal surfaces with dentinal scooping in both the ‘abrasion’ and ‘erosion’ groups. All impressions were sectioned buccolingually through the deepest point of the scooped dentine, and then the profiles were photocopied at X 2 magnification. The breadth and depth of dentinal profiles were measured to an accuracy of 0.1 mm, enabling ratios of depth:breadth to be determined, and the position of the deepest part of each scooped surface was recorded. The mean depth:breadth ratio of scooped dentine was significantly greater in the Aboriginal natural teeth (0. 19±60.06, mean±SE) than in the Aboriginal dental models (0.15±0.04). Both Aboriginal natural teeth and models with abrasion showed significantly smaller ratios (p<0.05) than the Caucasian models showing erosion (0.33±.07). Furthermore, in the abrasion samples, the deepest region of the scooped dentine tended to be lingually placed more often in maxillary teeth but buccally placed more often in mandibular teeth (p<0.05). These results indicate that scooped dentine on abraded occlusal surfaces of teeth displays significant differences in shape compared with that caused mainly by erosion.
Supernumerary tooth in the maxillary sinus: Case report
Authors: Erkmen Nilgün , Ölmez Seval , Önerci Metin 
Published: March 2008

AbstractThe ectopic development of teeth has been reported in many locations including the nasal cavity, maxillary sinus and the chin. Ectopic teeth may be permanent, deciduous or supernumerary. A case is presented in which a supernumerary tooth erupted into the maxillary sinus of an 11 year old boy.
Abnormally high fluoride levels in commercial preparations of 40 per cent silver fluoride solution: Contraindications for use in children
Authors: Gotjamanos Theo , Orton Vergil 
Published: March 2008

AbstractAlthough a 40 per cent solution of silver fluoride would be expected to contain 6 per cent fluoride (60 000 ppm), F‐ levels of 100 000 ppm and 120 000 ppm were found in 14 commercial samples analysed at The University of Western Australia in 1993 and 1994. To determine whether F‐ levels in 40 per cent AgF preparations have remained high, the present investigation was aimed at analysing different batches of commercial preparations obtained more recently.Fluoride ion analysis was carried out on 24 AgF samples using the Ion‐Selective Electrode technique. Independent analyses of the same samples were carried out by a private chemical testing laboratory (Genalysis). Ten samples supplied by Agson Chemical Export were found to contain between 75 000 and 100 000 ppm F‐; Genalysis reported 80 000 to 120 000 ppm. Fourteen samples supplied by Southern Dental Industries were found to contain between 70 000 and 120 000 ppm F‐; Genalysis reported 88 000 to 108 000 ppm F‐. These results confirm significantly higher than expected F‐ levels (ANOVA p<0.05) in commercial preparations of 40 per cent AgF.The solutions tested were found to contain a mixturr of ammonium fluoride, sodium or potassium fluoride, and silver fluoride. The additional presence of silver difluoride and hydrofluoric acid resulting from the manufacturing process has been suggested as an explanation for the much higher than expected levels of fluoride ion. In view of possible toxicity of 40 per cent AgF in young children, it is concluded that such a highly concentrated solution should not be used clinically; instead, lower strength AgF solutions should be investigated for their efficacy in caries treatment.
p53 expression in oral precancer and cancer
Authors: Rich Alison M. , Kerdpon Duangporn , AM Peter C. Reade 
Published: March 2008

AbstractExpression of the p53 tumour suppressor gene is a frequent finding in human malignancies, including oral cancer, and it has been detected in some potentially malignant lesions. The results of the present project showed that 35 of the 41 (85 per cent) oral mucosal lesions with histological evidence of epithelial dysplasia expressed p53, but the presence or absence of p53 staining could not be used to predict the outcome of potentially malignant oral mucosal lesions.
Adenomatoid hyperplasia in the mandibular retromolar area. Case report
Authors: Chen Y. K. , Lin C. C. , Lin L. M. , Yan Y. H. 
Published: March 2008

AbstractThis paper reports a case of adenomatoid hyperplasia of minor salivary glands in the retromolar area, with a unique symptom of painful swelling. This appears to be the first reported case in the Chinese population. It would be useful for clinical dentists to be aware of this tumour.
Dental cervical lesions associated with occlusal erosion and attrition
Authors: Khan F. , Young W. G. , Shahabi S. , Daley T. J. 
Published: March 2008

AbstractAcid demineralization of teeth causes occlusal erosion and attrition, and shallow and wedge‐shaped cervical lesions putatively involving abfraction. From 250 patients with tooth wear, 122 with cervical lesions were identified. From epoxy resin replicas of their dentitions, associations of occlusal attrition or erosion or no wear with cervical lesions were recorded at 24 tooth sites (total 2928 sites). Criteria used to discriminate occlusal attrition from erosion, and shallow from grooved, wedge‐shaped or restored cervical lesions were delineated by scanning electron microscopy. A 96 per cent association was found between occlusa and cervical pathology. shallow cervical lesions were more commonly found in association with occlusal erosion. Wedge‐shaped lesions were found equally commonly in association with occlusal erosion, as with attrition. Grooved and restored cervical lesions were uncommon. Differences were appreciated in the associations within incisor, canine, premolar and molar tooth sites which related more to the site‐specificity of dental erosion than to attrition from occlusal forces. Non‐carious lesions on teeth then have multifactorial aetiology and pathogenesis in which erosion and salivary protection play central roles. Dentists should primarily consider erosion in the diagnosis, prevention and treatment of tooth wear.
Incidence of complicated healing and osteoradionecrosis following tooth extraction in patients receiving readiotherapy for treatment of nasopharyngeal carcinoma
Authors: Tong Antonio Chi‐Kit , Leung Albert Chun‐fung , Cheng Jason Chi‐fung , Sham Jonathan 
Published: March 2008

AbstractA group of 43 patients requiring tooth extraction after radiotherapy for nasopharyngeal carcinoma (NPC) was studied retrospectively to determine the incidence of post‐extraction complications. It was found that because of the method used in the delivery of radiation, extraction of maxillary posterior teeth resulted in the greatest risk of complications (28.9 per cent), Including a 10.5 per cent risk of osteoradionecrosis (ORN). Based on the findings, a protocol was established for the dental care of such patients. It was concluded that when extraction of maxillary posterior teeth was necessary, prophylactic antibiotics were not sufficient to prevent the complication of delayed healing. The risk of ORN was 10.5 per cent within the field of maximal radiation does, Hyperbaric oxygen may be the better choice of preventive measures. However, in view of the low risk of ORN, wholesale prescription of hyperbaric oxygen therapy may no be indicated. An additional patient who had tooth extraction two weeks prior to radiotherapy was included to show that if adequate time for wound healing was not allowed, ORN could develop.
A clinical review of drug‐induced gingival overgrowths
Authors: Marshall Roderick I. , Bartold P. Mark 
Published: March 2008

AbstractThere is an increasing number of medications associated with gingival overgrowth. These medications are used to treat a number of common conditions in the Australian population and as such denitsts can expect to manage a number of patients with medication‐related gingival overgrowth. This review highlights the clinical features and management of the common overgrowths associated with anticonvulsants, immunosuppressants and the calcium channel blockers.
Cytotoxicity of polymerized commercial cyanoacrylate adhesive on cultured human oral fibroblasts
Authors: Thumwanit V. , Kedjarune U. 
Published: March 2008

AbstractCyanoacrylate (CA) has been used as both a commercial and tissue adhesive. Dentists may have had the experience of patients repairing their own acrylic‐based dentures using a cyanoacrylate (CA) adhesive known as ‘super glue’. This study evaluated the cytotoxicity of commercial CA adhesives when fully polymerized, as well as the toxicity of substances released from polymerized commercial CA adhesives after incubation of these materials for various periods of time. Toxicity was tested on cultured oral fibroblasts. Dead cells found around the various CA‐coated filter papers constituted inhibitory zones which varied from 200–1000 μm and which persited for two weeks. Control oral fibroblasts grew to approach the waxcoated filter paper. Cell viability testing using MTT and crystal violet staining methods supported the conculsion that polymerized CA‐coated filter paper released substances that are toxic to cells, while wax‐coated filter paper gave the same result as the control. The crystal violet staining method was also used to investigate the cytotoxicity of various CA materials after incubation for one, three, seven and 14 days and showed that CA continued to release cytotoxic substances at about the same level for at least two weeks. It can be concluded that, if CA adhesive is used for repair of broken dentures, it will release substances which are toxic to human oral fibroblast cells. This release of substances may persist for at least two weeks.
The use of glass ionomer in special needs patients
Authors: Gryst Mark E. I. , Mount Graham J. 
Published: March 2008

AbstractPlacement of restorations for patients who are physically or intellectually disabled or mentally ill can pose considerable difficulties for the general practitioner. Access to the oral environment is often limited and patient tolerance and concentration may be reduced to rather brief periods of time. Oral hygiene routines may be less than ideal leading to a high caries rate. Enamel surfaces which do not normally become carious can develop broad but shallow lesions with a poorly defined outline.Selection of the most suitable restorative material will be important, with longevity of the restoration as the prime consideration. Other factors such as access, isolation of the lesion and patient co‐operation must also be taken into account. Also, forces acting on restorative materials may be less than usual due to poor occlusion, teeth opposing dentures or being completely unopposed. Restoration by indirect techniques will often not be possible so the choice will be limited to the three plastic restorative materials normally used in restorative dentistry: amalgam, resin composite and glass ionomer.As a result of clinical experience it is suggested that glass ionomer will often be the material of choice. This paper describes five years experience with the resin‐modified glass ionomers in an institutional practice which is limited to patients with special needs.Clinical significancePlacement of restorations, with a reasonable expectation of longevity, can pose considerable problems for the patient with special needs. Resin‐modified glass ionomer is a useful alternative material and has been placed with a high degree of success over a period of five years.
A prospective study of cantilever resin‐bonded bridges: An intial report
Authors: Chan A. W. K. , Barnes I. E. 
Published: March 2008

AbstractA prospective study was undertaken in a dental teaching hospital to compare the clinical performance of cantilever resin‐bonded bridges with a fixed‐fixed design for the replacement of a maxillary permanent incisor. A total of 25 anterior resin‐bonded bridges was placed in 24 patients. The prostheses were evaluated over 14 to 45 months. During the evaluation period only one fixed‐fixed type debonded, which was subsequently rebonded successfully. There was no debond in the cantilever group. The short‐term, initial findings showed that cantilever resin‐bonded bridges performed as successfully as their fixed‐fixed counterparts and were considered to be an acceptable form of restoration.
Localised enamel hypoplasia of human deciduous canines: genotype or environment?
Authors: Taji Sue , Hughes Toby , Rogers Jim , Townsend Grant 
Published: March 2008

AbstractA discrete area of defective enamel formation that appears on the labial surface of the crowns of deciduous canine teeth has been described in both recent and prehistoric human population, with reported frequencies varying from 1 to 45 per cent. Suggestions about the aetiology of this localized hypoplasia range from genotypic factors to environmental conditions and systemic effects. The major aims of this study were to describe the frequency of occurrence and pattern of expression of the lesion in Australian Aboriginal and Caucasian ethnic groups, and to clarify the role of genetic factors by examining a sample of twins.The study sample consisted of dental casts of 181 pairs of Australian Caucasian twins, 215 Aborigines and 122 Caucasian singletons, together with 253 extracted deciduous canines. Examination of dental casts and extracted teeth was undertaken under 2X magnification with emphasis being placed upon location and expression of the lesion.The defect was observed in 49 per cent of twins and 44 per cent of Aborigines, but only 36 per cent of singletons. The percentages of affected teeth in each group were: 18 per cent in twins, 17 per cent in Aborigines and 13 per cent in Caucasians. A significant proportion of the defects occurred on the mesial aspect of the labial surface, in the middle area incisocervically, with the majority in the lower jaw. Anumber of significant differences in frequency were observed between groups, sexes, arches and sides.The results confirm some of the findings of previous studies, but also suggest that none of environmental, genetic or systemic factors can be ruled out as being involved in aetiology of the defect. The higher incidence of the lesion occurring on the mesial aspect of the labial surface is suggestive of physical trauma. Also, the vulnerability of the prominent developing mandibular canine, with its thin or missing labial covering of bone, would be expected to lead to higher prevalence of the lesion in the lower jaw. Although not definitive, the results of concordance analyses in twins were suggestive of a possible genetic predisposition in the formation of the lesion. Further research with a greater clinical orientation and emphasis on determing specific aetiological factors within any given environment in different ethnic groups may provide better insight into the ambiguous aetiology of the hypoplastic enamel defect.
Dental caries is a preventable infectious disease
Authors: Balakrishnan Mayooran , Simmonds Robin S. , Tagg John R. 
Published: March 2008

AbstractDental caries is the most common infectious disease affecting humans. the principal causative agents are a group of streptococcal species collectively referred to as the mutans streptococci of which Streptococcus mutans and Streptococcus sobrinus are the most important agents of human caries. This review outlines what is currently known about these ubiquitous pathogens and discusses novel methods for elimination of these bacteria from dental plaque.
Are dental; radiographs safe?
Authors: Abbott Paul 
Published: March 2008

AbstractDental patients are often aware that radiation has the potential to harm them but they do not usually understand how or why and what potential harmful effects may arise from dental radiographs. The potential for undesirable effects must be balanced against the benefits obtained from radiographs. Dentists should address the concerns of patients who question the need for radiographs and allow them to make an informed decision. Data are available that relate radiation exposure levels from medical and dental radiographs to normal background exposure levels and allow comparisons with everyday risks in life. Recognized radiation authorities publish guidelines to help dentists with their use of radiographs, although, due to the time lag associated with testing and the publication of results, some of the published data may not always be entirely relevant to currently used X‐ray machines and techniques. Dentists also have professional obligations not only to limit the use of radiographs to potentially beneficial situations but also to take good quality diagnostic radiographs, to limit the doses used, to use good radiation safety measures and to use modern equipment to achieve the best possible films. Radiographs must then be properly developed and viewed under appropriate conditions to gain the maximum possible diagnostic information from each exposure.
Outcomes of cleft care in Western Australia: A pilot study
Authors: Williams Alison C. , Johnson Nicola C. , Singer Steven , Southall Peter , Mildinhall Sue , Semb Gunvor , Sell Debbie , Thomas Steve , Sandy Jonathan R. 
Published: March 2008

AbstractThe purpose of this study was to compare outcomes and delivery of cleft care in Western Australia with the average standard of care in the United Kingdom (UK). This was achieved through a cross‐sectional study involving children born with unilateral cleft lip and palate between April 1983 and March 1985 (12 year olds) or between April 1990 and March 1992 (5 year olds). A total of 38 children born with unilateral cleft lip and palate were under the care of the cleft team based at Perth's Princess Margaret Hospital. Dental arch relations, facial skeletal pattern, speech, hearing, success of alveolar bone grafting and dental health were measured. It was found that fewer Princess Margaret Hospital children in both age cohorts had revision surgery and speech therapy compared with the UK average. The facial skeletal pattern, speech, hearing and alveolar bone grafting out‐comes from Princess Margaret Hospital were similar to the UK at age 12. Seventeen per cent of the Princess Margaret Hospital 12 year olds had a poor dental arch relationships compared with 39 percent in the UK. In the 5 year olds, most outcomes in Princess Margaret Hospital patients appeared better than the UK with lower residual treatment needs. While it is difficult to draw firm conclusions because of the small numbers involved, this study indicates standards need to be set and determined for Australia.