bluuebunny/crossref_metadata_2025_split huggingface dataset:
The analgesic efficacy of ibuprofen in periodontal surgery: A multicentre study
Authors: Pearlman B. , Boyatzis S. , Daly C. , Evans R. , Gouvoussis J. , Highfield J. , Kitchings S. , Liew V. , Parsons S. , Serb P. , Tseng P. , Wallis C. 
Published: March 2008

AbstractThe efficacy of a non‐steroidal anti‐inflammatory agent, ibuprofen, was evaluated in pain control following periodotal surgery. This type of agent acts peripherally by inhibiting the release of prostaglandins and minimizing the local inflammatory response. Thus there may be an advantage in pre‐treatment administration of the drug so as to delay or even prevent postoperative pain.The study was multicentre, involving a Public Hospital Periodontal Unit, two specialist periodontal practices in Sydney, NSW, ad two in Canberra, ACT. One hundred and twenty‐seven pateints who were to undergo periodontal surgery were randomly given either two 200 mg tablets of ibuprofen or two matching placebo tablets at least 30 minutes before administration of local anaesthesia. The procedure was double blind: neither the patient nor the colinical was aware of the tablet identity.Postoperatively, all patients were given labelled ibuprofen for pain relief, but were randomly divided into two groups: As directed who were instructed to take the drug regularly for two days postoperatively, and As required, who were to take the drug only if needed for pain relief. All patients completed a diary recording quantity and time of medication, and regular assessment of pain experience utilizing a viaual analogue scale.The As directed group showed no significant difference in pain experience between pre‐operative and post‐operative only medication, but the As required group experienced significantly less pain and requirement for medication if the ibuprofen was administered pre‐operatively.
Growth inhibition of oral bacteria related to denture stomatitis by anti‐candidal chalcones
Authors: Sato Masaru , Tsuchiya Hironori , Akagiri Mioko , Takagi Nobuhiko , Iinuma Munekazu 
Published: March 2008

AbstractIn the antimicrobial therapy of denture stomatitis, it is desirable to inhibit the growth of not only the primary causative organism, Candida albicans, but also other oral bacteria closely associated with the condition. Three synthetic anti‐candidal chalcones were characterized and compared for their additional activity in inhibiting these causative bacteria. Among the tested chalcones, 2,4,2′‐trihydroxy‐5′‐methylchalcone showed the highest activity for different Gram‐positive bacteria. It inhibited the growth of streptococci, staphylococci and lactobacilli at 25.0–50.0 μg/mL which was lower than or comparable to its minimum inhibitory concentration for candida. It functioned with a bactericidal action and leaked 260 nm‐absorbing substances from the streptococcal cells. The antimicrobial activity of 2,4,2′‐trihydroxy‐5′‐methylchalcone against both primary and secondary causative agents suggests it could be useful as a potent therapeutic agent in denture stomatitis.
Gap measurement and bond strength of five selected adhesive systems bonded to tooth structure
Authors: Arbabzadeh F. , Gage J. P. , Young W. G. , Shahabi S. , Swenson S. M. 
Published: March 2008

AbstractThe ability of a restorative material to bond and seal the interface with tooth structure is perhaps the most significant factor in determining resistance to marginal caries. Thus, the quality and durability of marginal seal and bond strength are major considerations in the selection of restorative materials. The purpose of this study was to compare the bond strength and marginal discrepancies of five adhesive systems: All‐Bond 2, Clearfil Liner Bond, KB 200, ProBond and AELITE Bond. Twenty‐five buccal and 25 lingual cavities were prepared in 25 caries‐free extracted molar teeth, giving 10 cavities for each of the 5 adhesive systems. All teeth were restored with the resin composite Pertac Hybrid, or PRISMA Total Performance Hybrid with their appropriate adhesive systems. After restoration, the teeth were thermocycled, were stained with a 1.5% aqueous solution of a procion dye (reactive orange 14) and sectioned coronally with a saw microtome. Three sections of 200 μm thickness were prepared from each restoration which were then examined microscopically to measure marginal gap widths using a confocal tandem microscope. Shear bond strength measurements were carried out on the dentine bond using a universal testing machine. The All‐Bond 2 adhesive system was found to have higher shear bond strength and to have the least gap with at the cementodentinal margin.
Langerhans' cell histiocytosis of the jaw bones. Report of 11 cases
Authors: Schepman K. P. , Raddent B. G. , van der Waal I. 
Published: March 2008

AbstractEleven cases of Langerhans' cell histocytosis of the jaw bones are reported. The clinial and radiographical features are described, and the role of the dentist in the diagnosis and management of this disorder is discussed.
Post‐extraction bleeding—An aid to diagnosis? Case report
Authors: Songra A. K. , Darbar U. R. 
Published: March 2008

AbstractHaemophilia A, the most common of bleeding disorders is characterzed by bruishing and spontaneous bleeding into the joints but may remain undiagnosed if present in the mild form. A case is discussed where episodes of bruising and joint sweelling as a child were misdiagnosed as rheumatic fever and the bleeding disorder was diagnosed following recurrent episodes of bleeding after extraction of an upper molar tooth.
An in vitro study of apical and coronal microleakage of laterally condensed gutta percha with Ketac‐Endo and AH‐26
Authors: Oliver Christopher M. , Abbott Paul V. 
Published: March 2008

AbstractThe purpose of this in vitro study was to compare both apical and coronal dye penetration when Ketac‐Endo and AH‐26 sealers were user with laterally condensed gutta percha. Crowns were removed from 28 teeth and the root canals were biomechanically prepared. The teeth were divided into two groups of 12 teeth. each and a control group of 4 teeth. Root canals in the two experimental groups were filled with laterally condensed gutta percha and either Ketac‐Endo or AH‐26 sealer. The ketac‐Endo group had the coronal 3 mm of gutta percha and sealer removed and the resultant cavity was filled with Ketc‐Endo alone. After the sealers had set, the root surfaces were coated with nail varnish except at the apex and at the coronal end. Positive control had no root fillings and were coated with nail varnish in the same manner while the negative controls were sealed apically and coronally with Cavit prior to apically and coronally with Cavit prior to sealing the entire external root surface with nail varnish. Specimens were placed in 2% methylene blue dye in a vacuum of 660 mm of mercury for five minutes and than left immersed for a further two days. The roots were vertically sectioned to determine the following mean levels of dye penetration: keta‐Endo, 1.08 mm apically and 6.29 mm coronally; AH‐26, 0.75 mm apically and 6.67 mm coronally. Positive controls had total leakage and negative controlls had no leakage. This study demonstrated that the apical and coronal seals obtained with Ketac‐Endo and AH‐26 were not significantly different although the apical seal obtained with each material was significantly better than the corresponding coronal seal.
Focal epithelial hyperplasia in an HIV positive man. An illustrated case and review of the literature.
Authors: Marvan Elishka , Firth Norman 
Published: March 2008

AbstractFocal epithelial hyperplasia (FEH) is a rare but distinctive entity of viral aetiology with characteristic clinical and histopathological features. It is usually seen in children and adolescents of American Indian and Eskimo background; however, it has recently been described in adults who are HIV positive. Suppression of the immune system leaves the individual vulnerable to opportunistic infections. With improved management of immuno‐compromised patients it is increasingly possible that the general dental practitioner will encounter secondary oral infections such as FEH and must therefore be able to recognize, diagnose and treat these lesions. The following report presents a case of FEH in an HIV‐infected man, and is followed by a review of the literature.
Idiopathic swelling of the lower lip associated with topical anaesthesia. Report of the three case
Authors: Yaman Zekai , Kişnişci Reha S. 
Published: March 2008

AbstractThree cases of idiopathic swelling of the lower lip are presented. Each developed following administration of a topical anaesthetic agent with unusual clinical manifestations closely resembling allergic angio‐oedema. The possibility of psychogenically mediated reactions was considered the contributing aetiological factor which showed as a somatic manifestation in the lower lips.
Handpiece degradation associated with performance testing of diamond rotary cutting instruments.
Authors: Gegauff A. G. , Rosenstiel S. F. , Johnston W. M. , Gangji R. K. 
Published: March 2008

AbstractReliable standardized testing of dental rotary cutting instruments remains a problem because of the many significant parameters that require identifying and quantifying. In a previous study, handpiece wear or degradation was identified as a potentially significant confounding variable leading to the suggestion that the use of industrial handpieces might be necessary. Therefore, the objective of this investigation was to measure and compare industrial and dental air rotor degradation during a simulated diamond rotary cutting instrument test. Two dental and two industrial products were tested in a random sequence using three replicate samples of each air rotor. The simulated test consisted of 10 diamond instruments each making 90 passes through a float glass substrate. The testing apparatus comprised a computer‐interfaced device that controlled the contact force between the cutting diamond and the substrate. Air rotor performance was based on the time required to cut a standardized path through the substrate. The performance change that occurred from diamond instrument to instrument during the simulated test was attributed to air rotor degradation. Multiple regression analyses showed significant differences between replicate samples of the same type and between regression intercepts for different air rotor types. Surprisingly, four air rotors exhibited improving performance during the simulated test. Changing air rotor performance must be considered to achieve reliability for the testing of diamond rotary cutting instruments.
Primary malignant melanoma of the oral cavity Report of an unusual case
Authors: Dimitrakopoulos I. , Lazaridis N. , Skordalaki A. 
Published: March 2008

AbstractPrimary malignant melanoma is only rarely found in the oral cavity (estimated at between 0.2 and 8 per cent of all melanomas) and occurs approximately four times more frequently in the oral mucosa of the upper jaw, usually on the palate or alveolar gingivae. A case is reported of a malignant melanoma in the mouth of a 74 year old male, which was originally diagnosed as reactive denture hyperplasia caused by a ill‐fitting upper denture. Correction of the denture fault failed to stop the growth of the mass, which was therefore removed surgically. Histological examination revealed a melanin‐producing tumour. A partial maxillectomy was performed and there was no evidence of recurrence over a three year follow‐up period.
Postoperative bleeding with factor VII deficiency: Case report
Authors: Cheng Jason C. F. , Wong Ricky W. K. , Yan Bill S. W. 
Published: March 2008

AbstractFactor VII deficiency was diagnosed during haematological investigation of a patient with multiple occurrences of postoperative bleeding after surgical extraction of an impacted upper left canine. The bleeding was eventutally stopped with local measures without resorting to blood product transfusion which may have been necessary if local measures had failed to control bleeding. Abnormalities were also found in subsequent blood profiles and coagulation tests in other members of the patient's family.
Determination of gold alloy loss during the production of cast dental restorations
Authors: Fitzpatrick Brian J. , Brockhurst Peter , Gullotta Edward 
Published: March 2008

AbstractValues for the loss of high gold content dental alloy during the fabrication of three types of cast dental restorations were determined. The mass changes measured were for the melting, casting and cleaning processes and the docking and laboratory finishing procedures involved in producing the final restoration. The casting yield from the alloy cast was also determined.Five Brisbane dental laboratories participated and 407 cast restorations were assessed. The mean mass loss for the melting and casting process was 0.109 g (SD 0.326) per cast restoration, and 0.827 per cent (SD 1.805) of the total mass of alloy melted.The data were analysed in four categories: alloy crowns, metal‐ceramic crowns, metal‐ceramic bridges, and combined. The mean total mass loss per restoration from docking and finishing for each of the four groups of cast dental restorations examined was 0.329 g, 0.350 g, 0.927 g and 0.363 g; 13.11, 28.30, 22.07 and 22.18 as a per cent of the mass of the docked casting respectively. The yield of casting masses from the alloy cast were 19.97, 9.11, 29.10 and 13.71 per cent respectively, with all differences significant at the 0.001 level. These values indicate that the recommendation for 50 per cent addition of new alloy for each cast is impractical.The wide spread of the data precludes the establishment of a precise agreed value between dentists and technicians for expected loss. However, the use of the median or mean would provide a value which might be an equitable indicator in the long term. Alternatively, working values can be developed for individual dentist/technician partnerships.
Diagnosis and management of teeth with vertical root fractures
Authors: Moule Alex J. , Kahler Bill 
Published: March 2008

AbstractVertical fractures in teeth can present difficulties in diagnosis. There are, however, many specific clinical and radiographical signs which, when present, can alert clinicians to the existence of a fracture. In this review, the diagnosis of vertical root fractures is discussed in detail, and examples are presented of clinical and radiographic signs associated with these fractured teeth. Treatment alternatives are discussed for both posterior and anterior teeth.
Root resorption of mandibular second molar teeth associated with the presence of the third molars
Authors: Yamaoka Minoru , Furusawa Kiyofumi , Ikeda Masakimi , Hasegawa Takafumi 
Published: March 2008

AbstractAlthough pressure resorption of second molars is associated with impacted and/or erupting third molars, the relationship between pressure resorption and age is unclear. In order to investigate this relationship, 3883 dental rediographs were studied in 3174 individuals of various ages.The incidence of superimposition of the second molar on the third molar was not elevated in any subgroup except that of women of 16–40 years of age. There were no age or sex differences for the incidence of second molar root resorption. In older individuals, root resorption associated with a completely impacted third molar was more frequent than with apartially impacted third molar, and root resorption at the apex was mainly seen in individuals over 50 years of age. There was a higher incidence of superimposition and root resorption in men than women. Apical root resorption may be seen long after the formation of completely impacted third molars in both genders.
The effects of extracellular citric acid acidosis on the viability, cellular adhesion capacity and protein synthesis of cultured human gingival fibroblasts
Authors: Lan W. C. , Lan W. H. , Chan C. P. , Hsieh C. C. , Chang M. C. , Jeng J. H. 
Published: March 2008

AbstractRoot surface demineralization is widely used as an adjunct to periodontal treatment. To clarify the influence of citric acid root conditioning on periodontal wound healing, the effects of citric acid and associated extracellular acidosis on the viability (MTT assay), attachment and protein synthesis ([3H]‐proline incorporation into tirchloroacetic acid‐precipitated proteins) of human gingival fibroblasts (GF) were investigated. A concentration of 47.6 mmol/L of citric acid (pH 2.3) in water led to total cell death within three minutes of incubation. Media containing 23.8 mmol/L and 47.6 mmol/L of citric acid exerted strong cytotoxicity (47 to 90 per cent of cell death) and inhibited protein synthesis (IC50=0.28 per cent) of GF within three hours of incubation. Incubation of cells in a medium containing 11.9 mmol/L of citric acid also suppressed the attachment and spreading of fibroblasts on culture plates and Type I collagen, with 58 per cent and 22 per cent of inhibition, respectively. Culture medium supplemented with 11.9, 23.8 and 47.6 mmol/L of citric acid also led to extracellular acidosis by decreasing the pH value from 7.5 to 6.3, 5.2 and 3.8, respectively. In addition, it was confirmed that the toxic effect of media containing citric acid was due to their acidity rather than the citrate content. Most of the citric acid‐induced cell death could be prevented by adjusting the pH value of the culture medium to pH 7.5. Sodium citrate, at a concentration of 47.6 mmol/L, also exerted little cytotoxicity. The results suggested that toxicity of citric acid in specific stages of the healing process must be considered prior to its clinical application. Careful management of citric acid in order to avoid contact with tissue or the development of other demineralizing agents is important in enhancing periodontal wound healing.
Hyperbaric oxygen in the prevention of osteoradionecrosis of the jaws
Authors: Vudiniabola S. , Pirone C. , Williamson J. , Goss A. N. 
Published: March 2008

AbstractPatients who have had their jaws irradiated as part of management of head and neck malignancy are at risk of osteoradionecrosis (ORN) following tooth extraction. Thirty‐seven patients with a history of irradiation to the jaws were managed during a four year period. Twenty‐nine patients received hyperbaric oxygen therapy (HBO) consisting of 20 treatments after. Only one (4 per cent) developed ORN. Seven patients who did not have HBO and one who did (15 per cent) developed ORN. The need for prophylactic treatment with HBO is discussed. It is recommended that prophylactic HBO is used prior to surgery for irradiated facial bones.
Facial burns in children: A series analysis with implications for resuscitation and forensic odontology
Authors: Acton Caroline , Nixon James , Pearn John , Williams David , Leditschke Fred 
Published: March 2008

AbstractThis study comprises a continuous (1981–1995) unselected series of all children who died from thermal injuries in teh state of Queensland, Australia. One hundred and six children, so identified, died from incineration (35 per cent), respiratory burns with smoke or carbon monoxide inhalaton (33 per cent), body surface area burns comprising greater than 60 per cent (9 per cent) and electrocution (20 per cent). The burn fatality rate electrocution (20 percent). The burn fatality rate was 0.98 per hundred thousand children (0–14 years) per year, with no secular trend and, specifically, no reduction in the annual rate of such fatalities. Eighty‐two children (49 males) had concomitant facial injuries, both thermal and nonthermal; of whom 55 per cent were under the age of five years. Sixty (73 per cent) child burn victims died in house fires. Forensic odontology is important in confirming the age of such victims in single incinerations but is of limited value wen larger numbers of children are incinerte, because of the relative lack of dental restorations in teh infant and pre‐school age group. Of the 82 children with facial and airway injuries, 12 per cent had only mild or superficial facial damage and only seven (8 per cent) were alive or resuscitatable at teh time of rescue from teh conflagration or burning injury. Child deaths from burns contributed an annual loss rate of 506 years of potential life lost (YPLL) in a population of 3 milllion of whom 21.5 per cent were children under the age of 15 years. Airway management and resuscitation, in the context of managing surviving burn victims of any age with facial injuries, pose special difficulties. Inhalational burns (smoke and the grass of conflagration) result in a mortality greater than 60 per cent. Although 81 per cent of children showed evidence of airway obstruction, analysis of current data indicates that a maximum of 8 per cent could have survived with airway maintenance and protection. Inhalational burns (to both upper and lower airway) grossly reduce survivability. Primary prevention would seem vital and thus remains a major challenge to reduce the incidence of such deaths. Some strategies include advocacy to promote the compulsory installation of smoke alarms, family drills to practise escape and the teaching of ‘first aid for all’.
Dentists' attitudes and practice regarding smoking
Authors: Clover Kerrie , Hazell Trevor , Stanbridge Vicki , Fisher Rob Sanson 
Published: March 2008

AbstractDentists are a potentially valuable source of community education about the health effects surrounding tobacco use. The aims of this study were to provide Australian data on dentists' current practice regarding discussing smoking with patients, dentists' perceptions of the barriers to discussing smoking with patients and dentists' interest in discussing smoking with patients. A postal survey of all dentists who were members of the Hunter Branch of the Australian Dental Association in New South Wales was conducted. Dentists generally reported quite high levels of current activity reported quite high levels of current activity regarding smoking. The majority of dentists reported asking at least some of their patients whether or not they smoked. Dentists reported that they discussed the possible oral effects of smoking with at least some of their smoking patients. Furthermore, they told at least some of their patients with smoking related disease that smoking may have contributed to their problems. Dentists identified a number of difficulties involved in helping patients quit smoking. These findings may be used to help guide future research and practice in involving dentists further in discussing smoking with patients.
Ameloblastoma of the maxilla. Case report
Authors: Iordanidis S. , Makos Ch. , Dimitrakopoulos J. , Kariki H. 
Published: March 2008

AbstractA basal cell maxillary ameloblastoma became obvious as an asymptomatic swelling of the left buccal sulcus and alveolar process, although a large extension into the maxillary sinus up to the nasal conchae and the orbital floor had already occurred. The painless and slow growth of the lesion, the thin bone of the upper jaws, the adjacent cavities and the vital structures are the main factors for delay in recognition and thus the potentially lethal result of a maxillary ameloblastoma.A review of location, age, sex and race predilection, clinical course, radiographic appearance, histological types and treatment methods is made.