bluuebunny/crossref_metadata_2025_split huggingface dataset:
Langerhans cell disease associated with pathological fracture of the mandible
Authors: MacMillan A. R. G. , Oliver A. J. , Radden B. G. , Lacy M. F. 
Published: May 2009

AbstractA 27‐year‐old male suffered a fractured mandible following extraction of a tooth. It was subsequently found that the fracture occurred in an area pathologically weakened by a localized lesion of Langerhans cell disease. Since lesions of the jaws may be seen either as the first manifestation or as a complication of widespread Langerhans cell disease, the dentist has a major role in the diagnosis and management of such cases.
Ectopic tonsillar tissue in the mucosa of the floor of the mouth simulating a benign tumour. Case report
Authors: Mogi Kenji 
Published: May 2009

AbstractEctopic tonsillar tissue in the mucosa of the floor of the mouth is rare. A case of a 38‐year‐old man with ectopic tonsillar tissue in the mucosa of the floor of the mouth is described. The lesion was manifested as a small, painless tumour. There was difficulty in establishing a clinical diagnosis, but it was thought to be a benign tumour and was removed and then examined histopathologically to confirm the diagnosis.
Anterior maxillary supernumerary teeth: A clinical and radiographic study
Authors: von Arx Thomas 
Published: May 2009

AbstractClinical records and radiographs of 90 patients with 113 anterior maxillary supernumerary teeth (mesiodens) have been evaluated. Although uncommon, mesiodentes are the most frequent supernumerary teeth and may disturb the eruption and/or position of the adjacent permanent incisors. Clinical and radiographic examination may disclose the number, direction and location of mesiodentes and their effects on neighbouring teeth. In the present study the majority of the supernumerary teeth lay palatal to the central incisors. Complete or partial eruption of a mesiodens was rare, hence the importance of radiographs to locate supernumerary teeth in the premaxilla.Pathological findings included the formation of dentigerous cysts in three patients and complete ossification of the pericoronal space with resorption of the crown of the mesiodentes in eight cases. Retention and malposition of the adjacent permanent incisors occurred in 39 and 24 cases, respectively.
Dental caries amongst Royal Australian Navy recruits, 1988
Authors: Morgan M. V. , Stonnill A. , Laslett A‐M. 
Published: May 2009

AbstractA sample of 1100 Royal Australian recruits were examined for dental caries in 1988. Socio‐demographic data were also collected. The mean DMFT scores were 4.33, 6.85, and 8.87 teeth for the 15–19 year‐olds, 20–24 year‐olds, and 25–29 year‐olds, respectively. Caries experience varied between the state of origin of recruitment with Victorian and Queensland subjects having the highest DMFT scores, and Tasmanian subjects, the lowest. Comparison with previous military studies indicated not only a decreased dental caries experience, but also that restoration of teeth rather than extraction is a more likely treatment outcome of dental caries in recent recruits.
Dental treatment and dental health. Part 2. An alternative philosophy and some new treatment modalities in operative dentistry
Authors: Dawson A. S. , Makinson O. F. 
Published: May 2009

AbstractIn this, the second of two papers on the relationships between dental treatment and dental health, the philosophical basis of Minimum Intervention Dentistry is presented. This approach to patient care has several distinct treatment modalities. These range from preventive measures and fissure sealants, through monitoring carious lesions for active progression or arrest, to minimal cavity designs such as tunnel preparations and preventive resin restorations which employ adhesive dental restorative materials. This paper discusses these techniques and the implications of this change in philosophy for dental teaching, research and manpower considerations.
Comparative elasticity tests for elastomeric (non putty) impression materials
Authors: Blomberg P. A. H. , Mahmood S. , Smales R. J. , Makinson O. F. 
Published: May 2009

AbstractThis study was conducted to evaluate the methods used for measuring the elastic recovery of various elastomeric impression materials. One brand from each chemical group was selected to allow relative ranking of the results from each deforming test mode.For compression tests, the polysulphide and silicone specimens made in metal moulds gave significantly less set than those made in acrylic moulds; this was not so for the polysiloxane and polyether specimens. For polysulphide and polyether materials, the set in compression was greater using the BSI balanced beam method than for an optical method without inertia or load effects; this was not so for silicone or polysiloxane materials. The elastic recovery of the materials did not alter significantly after ten minutes of strain release, except in tensile tests, where the elastic recovery continued to change for twenty minutes. The rank ordering of the deformation set showed a relative correlation for the compression test, a new tensile test method, and bend and torsion testing methods. Thus only one method is needed to determine set per cent.
Prosthodontic procedures for implant reconstruction. 1. Diagnostic procedures
Authors: Lechner S. , Klineberg I. , Duckmanton N. 
Published: May 2009

AbstractThe University of Sydney Dental School and more recently the Implant Centre have been treating patients with the Brånemark Osseointegration Implant System since 1981. Success depends on close cooperation between surgeon and prosthodontist. This paper describes specific prosthodontic treatment planning procedures based on a general knowledge of prosthodontics, and detailed methods for determining the position, length and alignments of the implants for a specific case by the use of radiographic and surgical templates.
Effect of gels containing stannous fluoride on oral bacteria — an in vitro study
Authors: Tseng C. C. , Wolff L. F. , Aeppli D. M. 
Published: May 2009

AbstractThe purposes of this investigation were to evaluate and compare the antimicrobial effect of (1) twelve 0.4 per cent stannous fluoride (SnF2) commercial products and (2) different concentrations of SnF2 (range = 0.02 to 3.28 per cent). The antibacterial inhibitory effect of various SnF2 gels was evaluated as to their effectiveness against oral plaque bacteria including strains of S. mutans, S. sanguis, S. sobrinus, A. viscosus, A. actinomycetemcomitans, and B. intermedius. When twelve different commercial preparations of 0.4 per cent SnF2 were compared for inhibitory effect on plaque bacteria, several of the SnF2 preparations were significantly more effective in inhibiting oral bacteria (p < 0.05). With increasing concentration of SnF2, there was a comparable increase in the inhibitory effect on the oral bacteria tested (r2 ranged from 0.867 to 0.996). SnF2 at a concentration of 0.4 per cent had a similar antibacterial effect to 0.12 per cent chlorhexidine. This in vitro study demonstrated that certain SnF2 products are highly effective in inhibiting the growth of bacteria often found in plaque, and this inhibitory effect is directly related to the concentration of the SnF2.
Dental caries and periodontal disease in Fiji
Authors: Davies G. N. , Hedrick P. , Luveni J. , Pal V. , Singh D. 
Published: May 2009

AbstractA national oral survey was conducted in Fiji in 1985/86. The results showed that the prevalence of caries was generally low and most commonly affected pit and fissure surfaces. Comparisons with previous surveys in 1948 and 1965 showed that the prevalence had fallen in primary teeth but remained relatively constant in permanent teeth. There were significant variations in prevalence between residential locations but not between ethnic groups. Periodontal disease was found to be a major public health problem. Except for the percentage of young children with caries‐free dentitions, the current status of oral health in Fiji was generally better than that proposed in the WHO goals for the year 2000. The training of dental hygienists to help in the prevention of both dental caries and periodontal disease is discussed.
Dual‐arch impressions
Authors: Bass E. V. , Kafalias M. C. 
Published: May 2009

AbstractAll dual‐arch impression techniques utilize special stock impression trays of various designs. These trays are made of flexible plastic with fabric or mesh material placed across the occlusal surfaces of the teeth connecting their buccal and lingual flanges. The presence of this material will result in errors by (1) not allowing complete intercuspation during impression‐taking; (2) producing incorrect recording of centric occlusion; and (3) because of the elastic memory of the tray/fabric, creating distortion of the elastic impression material.An impression technique is presented which provides a simple and effective method of obtaining dual‐arch impressions for single restorations, post and cores, and small bridges. This technique obivates the need for impression trays thus eliminating the errors outlined.
Effect of operator variability on void formation in impressions made with an automixed addition silicone
Authors: Lim Kian‐Chong , Chong Yea‐Hwe , Soh George 
Published: May 2009

AbstractThis study examined voids produced in impressions of an automixed addition‐reaction silicone. Two operators took the impressions using material dispensed from either intra‐oral tips or an impression syringe. The material was also hand‐mixed for comparison. There were no differences in the number of voids in the automixed material dispensed using the intra‐oral tip or impression syringe. Automixing produced substantially fewer voids than hand‐mixing. There was a significant difference in the number of voids in the impressions made by the two operators.
Evaluation of serum β2‐microglobulin in oral cancer
Authors: Manzar Wasif , Raghavan M. R. Vijay , Aroor A. R. , Keshavamurthy K. R. 
Published: May 2009

AbstractBeta2‐microglobulin (β2‐m) low molecular mass protein was measured in serum of normal subjects and in patients with oral cancer. There was a significant increase in β2‐m levels in oral cancer patients. The possible role of β2‐m as a biochemical parameter and its significance in oral cancer is discussed.
A clinical evaluation of three topical anaesthetic agents
Authors: Vickers E. R. , Punnia‐Moorthy A. 
Published: May 2009

AbstractThis study compared the efficacy of EMLA 5% Cream, Xylocaine 5% (lignocaine 5 per cent) and NUM (benzocaine 15 per cent, amethocaine 1.7 per cent) to a placebo in reducing the pain experience during needle insertion. In a random, double blind study three groups of twenty volunteers each had a paired topical anaesthetic/placebo placed bilaterally in the buccal sulcus of the upper premolar regions for two minutes, followed by the insertion of a standard 27 gauge needle to a depth of 5 mm. Pain experience was measured with visual analogue scales. Results showed that all three agents significantly reduced pain when compared with the placebo — EMLA (p<0.002); Xylocaine (p<0.05); NUM (p<0.005).
Prosthodontic procedures for implant reconstruction. 2. Post‐surgical procedures
Authors: Lechner S. , Duckmanton N. , Klineberg I. 
Published: May 2009

AbstractThere is essentially no flexibility in an osseo‐integrated implant system, so that the final fit of the prosthesis must be absolutely precise. A simple approach to this problem is presented with details as to impression taking, confirmation of accuracy of the master cast, fitting of the cast metal framework and construction of the superstructure. The information presented describes a full arch fixed restoration attached to mandibular implants, but may easily be followed for the maxilla or modified for quadrant restorations.
Regression analysis of dexterity tests and dental students' practical examination results
Authors: Spratley M. H. 
Published: May 2009

AbstractThe desirability of some means of assessing potential dental students' dexterity is discussed and three new practical tests are described. Regression analysis was performed on the results and the subsequent correlations are presented. Further regression analysis was performed on examiners' scores in dental technology showing the inconsistencies. Results were not conclusive and it seems that the tests could possibly be used in an advisory role but little more.
Patient attendance compliance in periodontal therapy
Authors: Tan Albert E. S. , Powell Robin N. , Seymour Gregory J. 
Published: May 2009

AbstractAttendance compliance of patients presenting for periodontal therapy during one calendar year at two practice locations (Perth, Western Australia and Darwin, Northern Territory) was observed over a period of three to four years, depending on whether the patients were seen in the earlier or latter part of the initial year. Both venues (full‐time practice and visiting practice every quarter) gave very similar results, of around 10 per cent of patients who dropped out after initial consultation, without commencing treatment. As well, both venues showed a similar trend of subsequent patient ‘attrition’ after the initial phase of treatment, with the retention of approximately 40 per cent of the original group of patients after three to four years. Of these, a very high proportion (90 per cent) were totally compliant with maintenance recall appointments.
Computer use in private dental practice in Australia, 1991
Authors: Hou Ann Y. S. C. , Barnard P. D. 
Published: May 2009

AbstractThere was a 70 per cent response to a mail questionnaire to a 1:3 sample of Australian Dental Association members in private practices (n = 1931). Computers were used by 37 per cent of practices. Main computer applications used were for: accounting (84%); patient billing (80%); word processing (79%); and patient recall (61 %). External bureau services were used by 4 per cent of practices with most computers being in‐house (single terminal 66%; multiple terminal 33%). The more dentists in a practice, the more likely was a computer to be used. Principal users were secretary/receptionists. Service and software were the most important factors in choice of computer system. Many practice computer users (67%) also had a Personal Computer at home compared with only 36 per cent of the non‐users. Many respondents indicated the need for continuing education in computers (67% users; 61% non‐users). More than half of the non‐users indicated future use of computers for accounting, billing and recall. There has been a considerable increase in the use of computers in private practice (37%) since the Australian Dental Association Dental Practice Survey in 1983/84 (9%).
Trigeminal neuralgia
Authors: Barrett Anthony P. , Schifter Mark 
Published: May 2009

AbstractSevere trigeminal neuralgia (TN) is probably the most excruciating pain experienced in the orofacial region. Apart from the primary idiopathic form (ITN), this lancinating pain may be secondary to a range of underlying organic diseases (STN). Diagnosis requires differentiation of these and elimination of other causes of orofacial pain.
A preventive dental care programme at the workplace
Authors: Westerman Bill 
Published: May 2009

AbstractEmployees from an industrial group in Brisbane were examined at the workplace and found to have generally low levels of dental disease. At the same time, the Australian Bureau of Statistics suggests that less than 45 per cent of Australians attend a dentist annually. This low attendance for regular dental care reduces the effectiveness of any preventive dental service. A pilot scheme of preventive dental care was provided for employees at the workplace in Brisbane. The aim of the programme was to provide regular health counselling and reinforcement of oral health activities, general dental information, regular prophylaxis, scaling and cleaning, and referrals for restorative care. The preventive programme was appropriate given the disease levels. The services were effective in improving the periodontal status and restorative care which resulted from referrals. As well, the preventive dental care programme proved to be readily acceptable to both employees and management.
Aspects of the design of modern dental air turbine handpieces*
Authors: Dyson J. E. , Darvell B. W. 
Published: May 2009

AbstractAir turbine handpieces are manufactured with a wide range of alternative design features which may influence their suitability for particular clinical procedures. In this article a general account of these features is presented and their advantages and disadvantages are discussed. Some deficiencies in current methods of stating equipment specifications are reported and suggested improvements are given. Where appropriate, general recommendations are made regarding handpiece selection for clinical practice.
Appropriate dental care for employees at the workplace
Authors: Westerman Bill 
Published: May 2009

AbstractThe data from a dental health survey of an Australian employee group in Brisbane were used to test the value of dental health programmes at the workplace as a means of improving general dental health.The amount and complexity of treatment needs were investigated. Although both dental caries and periodontal disease were widespread, few of the employees had major treatment needs, most requiring minimal, simple dental care. Because of the minor treatment needs of a relatively static group of employees, the viability of a dental practice at work with emphasis on restorative dental care was questioned. Given the disease levels, the treatment needs indicated that a system based on prevention and maintenance care would be more appropriate.
Apicectomy of posterior teeth — A clinical study
Authors: Cheung L. K. , Lam J. 
Published: May 2009

AbstractStudies evaluating periapical surgery of posterior teeth are relatively few. A retrospective study of 32 apicectomies on posterior teeth using both clinical and radiographic means yielded a success rate of 62 per cent. There were five cases (16 per cent) of failure, the majority of which presented as delayed infection between three and six months following surgery. Post‐surgical review of at least six months is recommended. Anatomical considerations for posterior tooth apicectomy and the necessity for retrograde fillings are discussed.
The assessment of apical leakage of root‐filled teeth by the electrochemical technique
Authors: Amditis Constantine , Bryant Roland W. , Bladder Stephen M. 
Published: May 2009

AbstractSince its inception by Jacobson and von Fraunhofer1 in 1976, several studies have used the electrochemical method to assess the leakage occurring around root canal fillings. This study has examined aspects of the electrochemical technique and the effects that this test method may have on leakage results. The findings have raised concerns about the application of the technique. It is evident that electrochemical leakage testing over 30 days can influence the electrochemical leakage reading at 30 days and may influence the linear dye penetration recorded at 30 days. It is suggested that testing for electrochemical leakage should not precede the assessment of linear dye penetration.
The effect of dentine conditioning with polyacrylic acid on the clinical performance of glass ionomer cement
Authors: Tyas Martin J. 
Published: May 2009

AbstractThere is equivocal laboratory evidence that pretreating (conditioning) dentine with poly(acrylic acid) (PAA) increases the bond strength of glass ionomer (polyalkenoate) cement; however, this has only been tested clinically to a limited extent. Forty Class V abrasion lesions were restored with glass ionomer cement; 20 with PAA conditioning and 20 without. Restorations were assessed after one year for marginal staining on a continuous linear rating scale. There was slightly more marginal staining around restorations in the group not conditioned with PAA, and one restoration from this group was partly lost. However, the difference in the clinical performance between the restorations in the two groups was neither clinically nor statistically significant.
The development of the dental high‐speed air turbine handpiece. Part 1*
Authors: Dyson J. E. , Darvell B. W. 
Published: May 2009

AbstractThe high‐speed air turbine handpiece is currently used for most dental cutting procedures and has been in widespread use for more than thirty years. Although reports of its historical background have been previously published these have not dealt with all relevant developments and some inconsistencies exist. The history of the development of turbines and their application in dental cutting systems from the late 19th century to the present day is now reviewed. An historical account of the recognition of benefits that may accrue from rotary cutting at increased speeds is given and the various attempts that have been made to design equipment capable of high speeds are discussed. Consideration is given to the development of non‐rotary cutting devices, as is the failure of these adequately to replace the air turbine handpiece for routine work. It is concluded that the air turbine handpiece will continue to hold a leading position in the field for some years to come but that future improvements would be facilitated by the development of an understanding of the theoretical aspects of its behaviour.
Deformation of vented crowns with fluids of differing viscosities
Authors: Wilson Peter R. 
Published: May 2009

AbstractVenting of full crown restorations is an effective aid to seating during cementation. Vent hole repair complicates placement procedures and potentially disturbs the coronal integrity of the restoration. Cervical deformation of crowns during cementation was measured with circumferential strain gauges. Crowns were able to be vented occlusally, and two silicone fluids of widely differing viscosities were used. Venting significantly decreased the time to seat for both viscosities. It also decreased deformation of crowns cemented with low viscosity fluid, but increased deformation during cementation with high viscosity fluid. The values of deformation were nearing clinial significance for ceramic systems. Increased axial wall separation gave a similar decrease in seating times, but with no increase in deformation.The advisability of venting is questioned when high viscosity cements are used, and methods of increasing axial wall separation are recommended.
The importance of oral foci of infection in renal transplantation
Authors: Yamalik Nermin , Avcikurt Ugur F. , Caglayan Feriha , Eratalay Kenan 
Published: May 2009

AbstractDuring the treatment of patients with renal failure or renal transplants the most important consideration is to eliminate sources of infection before and after the treatment. Acute or chronic oral infections or bacteraemias resulting from dental procedures may cause serious complications in these patients who already have lowered host resistance caused by immunosuppressant therapy. In order to determine the latest concepts from some international transplantation centres relating to the importance of and the effect of infective sources in the oral cavity, a survey form was prepared which included several questions related to oral foci of infection and renal transplantations.Results obtained from 22 centres from 12 countries indicated that the majority of the centres included a dental examination in their routine protocol and required completion of any necessary dental treatment before transplantation. However, full agreement among all these centres on the necessity for dental examination as part of the protocol has not yet been reached.