bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pathophysiological and therapeutic aspects of dentoalveolar resorption
Authors: Pierce Angela 
Published: May 2009

AbstractBoth physiological and pathological forms of bone and tooth resorption are seen in the dentoalveolar complex, and much of the non‐restorative component of a clinician's work is occupied by problems related to loss of bone or dentine. Bone resorption is also a feature of many systemic diseases, some of which can affect the alveolar bone. The aim of this report is to summarize some recent work in which the dentoalveolar complex has been used as a model system to study physiological, pathological and therapeutic aspects of resorption of bone and dentine.
Clinical evaluation of the bond between composite resin and etched glass ionomer cement
Authors: Tyas M. J. , Toohey A. , Clark J. 
Published: May 2009

AbstractOne hundred and thirty‐eight non‐undercut Class V abrasion lesions were restored using glass ionomer cement overlaid by composite resin. Four techniques were used: enamel and glass ionomer acid‐etched, enamel only acid‐etched, ionomer only acid‐etched, and neither enamel nor glass ionomer acid‐etched. The restorations were examined after six months, one year and two years and evaluated for integrity and marginal staining, the latter employing a direct clinical method and a set of photographic standards. The relative failure of restorations at six months was maintained at subsequent time intervals, and at two years the failure incidence was 10, 35, 43 and 58 per cent for the above four techniques respectively. Marginal staining was most evident around those restorations for which only the glass ionomer had been etched. The results indicate that the retention of composite to etched glass ionomer is similar to that of composite to dentine using many dentine bonding agents. The several advantages of glass ionomers over dentine bonding agents are discussed.
Ameloblastic fibro‐odontoma. Case report
Authors: Günhan Ömer , Celasun Bülent 
Published: May 2009

AbstractAmeloblastic fibro‐odontoma is a relatively rare odontogenic tumour which is composed of ameloblastic fibroma and a complex or compound odontoma. In this article, a case of a two‐year‐old boy with this tumour is presented.
The wettability of bonding resins used in the composite resin/glass ionomer ‘sandwich technique’*
Authors: Mount G. J. 
Published: May 2009

AbstractThere is some controversy about the significance of the wettability of the unfilled resin bonding agent that is generally recommended for prior application when placing a composite resin restoration. It has been suggested that the degree of viscosity does not matter. However, when investigating the union which is developed between composite resin and glass ionomer cement in the ‘sandwich technique’, it was noted that when using certain composite resins and their prescribed bonding resins the failure under tensile stress was adhesive at the union rather than cohesive in the cement. Further investigation showed that the bonding resins involved in these failures were more viscous than those bonding resins used in the more successful unions.In this investigation the contact angle of the bonding resin on the surface of glass ionomer cement was used as the measure of viscosity. It is suggested that the degree of viscosity of the bonding resin is significant in the success or otherwise of the ‘sandwich technique’.
Requirement and supply of dental services in Victoria
Authors: Spencer A. John , Lewis Jenny M. 
Published: May 2009

AbstractThe appropriateness of dental manpower has become a great uncertainty in the changing practice of dentistry. This paper presents research on the requirement for and supply of dental services in Victoria between 1984 and 1996. The requirement for dental services was found to be increasing due to population growth and higher per capita demand due to decreased edentulism. The supply of dental services was found to be mildly decreasing due to balanced supplementation and attrition processes and subtle sex ratio and age distribution changes among dentists. The resulting market excess, even after consideration of idle capacity and transfer of services supplied to dental therapists, provides a marked contrast to many, but not all, developed countries. It also offers an opportunity to shape occupational and specialty distribution to the advantage of dental professions and the public.
Guidelines for the use of dietary fluoride supplements in Australia
Authors: Riordan Paul J. 
Published: May 2009

AbstractA survey in 1988 of brands of fluoride supplements available in a non‐fluoridated town in Western Australia, and tablets described in pharmaceutical product registers, revealed that six brands of tablets and one brand of solution (drops) were on the market. Tablets contained 2.2 mg or 1.1 mg NaF; the solution contained 2.2 mg NaF per mL. All products provided age‐dose schedules which would give fluoride supplementation at levels greater than the National Health and Medical Research Council guidelines. In one case, infants following the schedule would receive four times the recommended dose for the first two years of life. Compliance with several of the age‐dose schedules would be certain to cause significant dental fluorosis. Whether the others caused fluorosis would depend on the quantity of fluoride in the diet, and consumption of fluoride toothpaste. The survey showed a generalized disregard on the part of the ethical pharmaceutical industry for the risk of dental fluorosis, and reveals a need for a voluntary, or legally enforced, code of conduct for manufacturers of fluoride supplements. The value of guidelines which are not monitored is doubtful.
Biological and clinical evaluation of the transmandibular implant
Authors: Arvier J. , Scott J. , Goss A. , Wilson D. , Tideman H. 
Published: May 2009

AbstractThe transmandibular implant has been shown to be a successful clinical solution to prosthetic rehabilitation of patients with gross mandibular atrophy. Aspects of the biocompatibility of the implant material including the component metals in the alloy have been tested in an animal model utilizing sheep. The initial Adelaide results in the clinical multicentre trial are presented. These were generally excellent and the reasons for the few failures are presented.
Attitudes of Victorian dentists to removable partial denture prosthodontics: treatment planning
Authors: Parker D. A. S. , Harcourt J. K. , Cheung N. H. 
Published: May 2009

AbstractA survey of the attitudes of dentists in Victoria to various aspects of the treatment planning phase of removable partial denture prosthodontics was undertaken. Data were analysed and compared with those obtained from an identical study in South Australia. Those Victorian dentists who graduated in the 1960s, those who worked in multiple‐practitioner practices, or non‐rural areas, and those who had an added interest in removable prosthodontics were more likely to stress the importance of a greater number of attributes than those who graduated in the 1950s or 1970s, or those who worked alone, in rural areas, or had no particular interest in the discipline. Results indicated also that Victorian dentists tended to place greater emphasis on many of the concepts embraced by the questions asked than their interstate colleagues.It is suggested that, in addition to formal education, intraprofessional relationships and interest in a discipline are factors which might influence the concepts and attitudes of general practitioners.
Microbiological assays as predictors of the response to periodontal therapy
Authors: Newcomb G. M. , Nixon K. C. 
Published: May 2009

AbstractThirty‐four patients with periodontal disease each had subgingival plaque samples collected from four sites (one from each quadrant) in their mouths. The relative proportions of spirochaetes, motile rods and cocci were determined using dark field microscopy and the proportion of anaerobic to aerobic microorganisms was calculated after culture. In addition, clinical recordings were made at these sampled sites. The patients then underwent a course of periodontal treatment and were placed on a maintenance programme. The clinical recordings were repeated and the results examined to ascertain if the original microbiological or clinical measurements could have been used to predict the response to therapy.Of the baseline recordings, the initial probing depth, the initial attachment level and the presence of suppuration all showed a positive correlation with the degree of pocket reduction or attachment gain produced by treatment. The percentage of cocci in the subgingival plaque correlated negatively with the treatment response. Suppuration seemed to be associated primarily with the original pocket depth while the percentage of cocci in subgingival plaque showed a true relationship with the amount of attachment gained after periodontal therapy. The significance of this finding is discussed.
Clinical performance of dentine bonding agents in the enamel‐etched Class V abrasion lesion
Authors: Tyas Martin J. 
Published: May 2009

AbstractNinety‐three non‐undercut cervical abrasion lesions were restored with one of five dentine bonding agents and composite resin, using enamel etching to supplement retention. The restorations were reviewed at approximately one, six, 12 and 24 months. The loss rate at one year ranged from zero to 50 per cent, and marginal staining became apparent over the one‐year period. It is evident that even with enamel etching, some dentine bonding agents are not effective enough to reliably retain composite in Class V abrasion lesions.
The use of theatre in dental health education
Authors: Bourke L. F. 
Published: May 2009

AbstractThis report describes the use of theatre as a strategy for school dental health education. A play with messages relating to dental disease and its prevention was staged by school dental personnel for middle level primary schoolchildren. Feedback from the school staff indicated that the performance was well received and understood by the majority of the pupils. School dental personnel found that the awareness of dental disease and its prevention among their patients was generally more positive after the play. It thus appears that theatre is a useful medium for dental health education of young people.
Visualization of the maxillary sinus and styloid processes using rotational panoramic radiography
Authors: Monsour P. A. , Mendoza A. R. 
Published: May 2009

AbstractA technique is presented which improves visualization of the medio‐lateral aspect of the maxillary sinus using rotational panoramic radiography. The method was also assessed for accuracy of styloid process projection. Using a specially constructed Perspex stand, dried skulls of varying ages were radiographed in various reproducible positions using a panoramic unit. The best medio‐lateral view of the maxillary sinus of adult skulls was achieved by: (1) raising the height of the film approximately 20 mm in relation to the subject; (2) moving the subject 15–20 mm forward of the standard position for a panoramic view for adults (10–15 mm for children); and (3) tilting the occlusal plane downwards approximately 8–10 degrees. The styloid processes were readily seen using this maxillary sinus view. The resultant image of the process was elongated by a factor of 1.24 +0.02 by this technique.
‘A bridge too far …’. Case report
Authors: Loh H. S. , Rauff A. 
Published: May 2009

AbstractAn 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.
Mandibular osteomyelitis and pathologic fracture associated with metabolic catabolism induced by ‘binge’ drinking. Case report
Authors: Ferguson John W. , Luyk Neil H. , Whitley Brian D. 
Published: May 2009

AbstractA case is reported where intermittent ‘binge’ drinking was associated with mandibular infection, pathologic fracture and failure of healing in a 30‐year‐old man.
A large dermoid cyst of the neck. Case report
Authors: Young B. K. , Davies A. S. 
Published: May 2009

AbstractAn elderly patient presented with a large asymptomatic submental swelling which had been present for about fifteen years. The clinical diagnosis was a dermoid cyst and the lesion was removed in toto. Histological examination confirmed the clinical diagnosis. Unless such lesions are very large and cause displacement of the tongue, there is usually no associated dyspnoea, dysphagia or dysphonia.
Comparison of dental needs with the treatments actually received
Authors: Broughton Alan M. , Smales Roger J. 
Published: May 2009

AbstractThe main purpose of the study was to determine the types, causes, dental needs, and follow‐up treatments of the chief complaints of a socio‐economically disadvantaged population of patients attending a public dental hospital.Around half of the 301 patients examined were 45 years of age and older, and the vast majority were of caucasian origin. The most common dental complaints in 259 patients were toothache, broken teeth, lost fillings, and painful, broken or loose dentures. The most frequent causes of the chief complaints were judged to be dental caries, and inadequate restorations and removable prostheses. On examination, most of the patients also had one or more other unsatisfactory restorations or removable prostheses, especially in the 35 years and over age group. Deep periodontal pockets were also found most often in this age group.After four to six months, of the 259 patients with chief complaints, 113 had had their complaints treated and 45 had not, 47 patients were given a different form of treatment from that proposed, while 31 treatments were uncompleted, and 23 patients could not be followed up.
The effects of temperature on the setting of glass ionomer (polyalkenoate) cements
Authors: Fricker John , Hirota Kazuo , Tamiya Yoriyuki 
Published: May 2009

AbstractGlass ionomer (polyalkenoate) cements have proved to be superior to zinc phosphate cements as orthodontic luting agents.Setting behaviours at different temperatures were recorded by an oscillating rheometer under controlled conditions. The working time of these cements can be increased by mixing on a chilled glass slab with setting time at mouth temperatures remaining rapid. Where more than one orthodontic band is cemented per mix, the authors recommend refrigeration of the glass slab for at least one hour prior to mixing the cement.
An overview of industrial accidents with particular reference to facial trauma
Authors: Shalhoub S. Y. 
Published: May 2009

AbstractAs an integral part of the economy of Saudi Arabia the industrial sector has rapidly developed in the last decade and is still open for more growth. Thus, there is likely to be an increase in industrial accidents, often with added consequences for the medical services. Because of this, cumulative information on industrial accidents is needed. This paper reports on industrial accidents in order to alert medical researchers to the need for specific studies of different industrial occupations in Saudi Arabia so that adequate administrative and medical services may be available should an industrial accident occur.
Complications associated with maxillary nerve block anaesthesia via the greater palatine canal
Authors: Sved Anthony M. , Wong John D. , Donkor Peter , Horan James , Rix Leesa , Curtin Justin , Vickers Russell 
Published: May 2009

AbstractThis paper documents the type, frequency and duration of complications associated with regional anaesthesia of the maxillary nerve via the greater palatine canal in a series of 101 patients treated in the Oral Surgery Department, United Dental Hospital of Sydney.
An investigation of the composite resin/porcelain interface*
Authors: Lu Raymond , Harcourt John K. , Tyas Martin J. , Alexander Babs 
Published: May 2009

AbstractFailures at composite resin/porcelain interfaces under shear‐like loading were examined. Porcelain surfaces were treated with hydrofluoric acid and/or one of two silane coupling agents, using two different composite resin cements.The results showed that after seven days storage, bond strengths of specimens which had undergone porcelain surface treatment were greater than the cohesive strength of the porcelain itself, resulting in brittle fracture of the porcelain. The diluted restorative composite resin performed as well as the commercial composite resin cement. Silane pre‐treatment of porcelain was important as the bond strength of etched/silane primed specimens was significantly higher than the etched only specimens. However, one primer appeared to be more efficient than the other in bond promotion. Some explanations for the differences in bond strengths are offered.
The effect of chronic fluoride administration on rat condylar cartilage
Authors: Harbrow D. J. , Robinson M. G. , Monsour P. A. 
Published: May 2009

AbstractMorphometrical and histochemical techniques were used to demonstrate changes to the cartilage layer of the rat temporomandibular joint condyle following chronic exposure to fluoride. An increase in thickness of the cartilage layer was noted in rats given 100 parts per million sodium fluoride in drinking water. No significant changes were observed with either control or low dose (10 parts per million) groups. The observed thickening was attributable to an increase in number and size of cells of the lower hypertrophic zone. Accumulations of glycogen were observed in these cells, which reflects the inhibitory effect of fluoride on glycolysis. Stimulation of chrondrocytes by fluoride may have delayed the normal prooesses of capillary invasion, resulting in thickening of the cartilage layer. No changes to staining patterns of immature or mature types of collagen were observed, nor did the staining pattern of detectable glycosaminoglycans change due to fluoride.
Dental treatment and dental health. Part 1. A review of studies in support of a philosophy of Minimum Intervention Dentistry
Authors: Dawson A. S. , Makinson O. F. 
Published: May 2009

Abstract— An international movement emerged in 1986–1987 which heralded a major change in the role of conservative dentistry. This shift was away from the traditional operative dentistry, with its relatively frequent replacement of restorations, to a concept of ‘Minimum Intervention Dentistry’, which advocates the use of adhesive dental materials, remineralization techniques and monitoring of initial carious lesions. The move away from some of Black's concepts started as investigations examined the dental health of patients in the National Health Service of Great Britain. These investigations, and the report of the Committee of Enquiry into Unnecessary Dental Treatment, have resulted in an extensive re‐education programme being initiated by the British Department of Health and Social Security in conjunction with the British Dental Association.This paper, and a subsequent one, were written to enable widespread dissemination of these ideologies to Australian practitioners. While they may appear provocative to some, these papers were merely meant to stimulate discussion on the implications of this research for dentistry in this country. In this paper the results from the British investigations are presented, as is a discussion of some of the outcomes of this and other related research.
Some parameters for testing deformation of elastomeric impression materials
Authors: Blomberg P. A. H. , Mahmood S. , Smales R. J. , Makinson O. F. 
Published: May 2009

AbstractBecause of conflicting published data, the temperature rise in four elastomeric materials was measured with a thermistor during setting in the oral cavity and in metal and plastic moulds of varying shapes and volumes for ‘elastic set’ specimens. The clinical temperature rise was 2–3°C higher in the molar region than anteriorly, except for the polysiloxane. The temperature range attained in the set materials varied from 29°C to nearly 35°C for clinical and in vitro specimens.The average time taken by a group of operators to remove this type of impression from the mouth was five seconds. In a custom tray with light and heavy viscosity materials, the syringe material layer was only 0–0.15 mm thick and, essentially, the heavy viscosity material provided the elastic components for the impression.
Acrylic resins reinforced with woven highly drawn linear polyethylene fibres. 2. Water sorption and clinical trials
Authors: Chow T. W. , Ladizesky N. H. , Clarke D. A. 
Published: May 2009

AbstractThe results reported in this paper are part of a continuing study of the reinforcement of acrylic denture base resins with highly drawn linear polyethylene fibres. Water sorption is significantly reduced by incorporation of these fibres, even though the water diffusion processes as such remain broadly unaffected. Clinical trials are encouraging and the reinforced dentures have been well accepted by all the patients.
The adaptation achieved by four root canal filling techniques as assessed by three methods
Authors: Amditis Constantine , Bladder Stephen M. , Bryant Roland W. , Hewitt George H. 
Published: May 2009

AbstractFour root canal filling techniques — lateral condensation, McSpadden compaction, ultrasonic activation (Enac), and thermoplastic injection (Ultrafil) — were assessed for adaptation of the filling material to the canal wall. The adaptation and leakage were examined quantitatively using an electrochemical method and a linear dye penetration method, and qualitatively by radiographic evaluation. Using the electrochemical method, differences among obturation techniques were relatively small, although a greater proportion of the teeth that had been filled by lateral condensation exhibited no leakage. Radiographically, the techniques appeared to exhibit similar adaptation in the apical 6 mm. The techniques of lateral condensation and ultrasonic activation showed superior control of length of the root canal filling.
Multiple bilateral dens in dente involving all the premolars. Case report
Authors: Karaca İnci , Toller Melahat Öġütcen 
Published: May 2009

AbstractDens in dente, also known as dens invaginatus, dilated composite odontoma or deep foramen caecum, is a developmental malformation which usually affects maxillary incisor teeth, particularly lateral incisors. It may occur, however, in teeth anywhere within the jaws but other locations are comparatively rare. It can occur within both the crown and the root, although crown invaginations are more common. In this paper a case of multiple bilateral dens in dente involving maxillary and mandibular premolars is presented.
Totally submerged deciduous maxillary molars. Case reports
Authors: Antoniades K. , Tsodoulos S. , Karakasis D. 
Published: May 2009

AbstractThe total reimpaction or submersion of deciduous teeth is a very uncommon phenomenon and few cases have been reported in the literature. The condition affects the mandibular second deciduous molar most often and the maxillary first deciduous molar least often. Two cases of totally reimpacted maxillary deciduous molars are reported