bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation and development of a bone age assessment method in patients with Down syndrome
Authors: Moraes Michelle Bianchi de , Moraes Mari Eli Leoneli de , Raldi Fernando Vagner , Ragone Simone Maria Guimarães , Holleben Déborah 
Published: May 2015

This study evaluated the applicability of the method developed by Caldas to measure vertebral bone age for Brazilians suffering from Down syndrome. A database comprised of 57 case records of individuals with this syndrome, both male and female, with age ranging between 5 and 18 years, was assessed. These records had lateral cefalometric radiographies and radiographies of hand and wrist, being all obtained on the same date. Also, 48 records of individuals not suffering from Down syndrome were assessed. For the hand and wrist radiographies the Tanner and Whitehouse (TW3) method was used, and bone age was obtained. The Caldas method was employed on the lateral cefalometric radiographies in order to obtain the vertebral bone age. From the information about the bone age, vertebral bone age and chronological age, the Wilcoxon test was used to compare all the ages in pairs. There was a statistically significant difference between the three ages mentioned above for both male and female control group and female Down syndrome group. Therefore, this method was only suitable for Down syndrome male individuals. Based on the results, a formula to obtain the bone age for Down syndrome individuals was developed.
Depression and TMD among elderly: A pilot study
Authors: Vilalta Valéria C. , Dos Santos Mateus Bertolini Fernandes , Da Cunha Vicente P.P. , Marchini Leonardo 
Published: May 2015

Objectives: Temporomandibular dysfunction (TMD) is a painful syndrome that affects orofacial region, with deleterious effects in patients’ quality of life. Several aspects of TMD among the elderly are still controversial in the literature. The aim of this paper is to verify the prevalence of TMD among the elderly in Taubaté – Brazil, and its possible association with other co-morbidities. Material and Methods: Sixty-eight elderly individuals, presenting an average age of 69.5 years (SD 8.5), participated in this study, 37 of which were female. The Research Diagnostic Criteria for Temporomandibular Dysfunction (RDC/TMD) was used to verify TMD and its possible association with other co-morbidities. Results: The studied sample presented a low prevalence of TMD according to RDC/TMD (10.3%). Women presented more non-specific physical symptoms than men (pain items included, p=0.016, x2 test). Depression and non-specific physical symptoms (pain items excluded) did not correlate with patients’ gender. Associations were found among depression and characteristic pain intensity (p=0.027, ANOVA), non-specific physical symptoms (pain items included, p<0.001), non-specific physical symptoms (pain items excluded, p=0.001) and chronic pain grade (p=0.004), whereas the more depressed the patients were, the higher were their pain scores. Conclusions: One can conclude that psychological factors, such as depression, were associated with TMD prevalence, thus reinforcing the need for a multidisciplinary approach for TMD treatment. Key-words: Clinical Assessment; Depression; Elderly; Research Diagnostic Criteria for Temporomandibular Disorders; Temporomandibular Disorder.
Impact of excess cement removal on vertical misfit and cement line quality in onlays
Authors: Soares Matteo Baiotto , Inoue Ricardo Tatsuo , Naves Lucas Zago , Martinelli Janisse , Gonçalves Luciano de Souza 
Published: May 2015

Aim: To evaluate the vertical misfit and cement line quality of partial ceramic restorations cemented with resin luting cements using two different methods for cement remove excess. Materials & Methods: Lithium di-silicate restorations were fabricated and cemented at 24 human molars that receive onlay type preparations. The specimens were randomly divided in two groups (n=12): Group 1 (G1) where the cement excess was removed at pre-gel stage and Group 2 (G2) with the cement excess removed after the polymerization. The vertical misfits at cement line were measurements twice, before and after cementation. Epoxy resin replicas of the specimens were obtained and the cement line quality was analyzed with the scanning electron microscope before and after the finishing and polishing procedures and classified as unsatisfactory, acceptable or good conditions. The vertical misfits values were submitted to Student test (p<0.05) and the quality line data were analyzed with Mann-Whitney for independent samples (p<0.05) and Wilcoxon test for paired specimens (p<0.05).Results: The statistical analysis showed that vertical misfit and the cement line quality presented no difference values to G1 and G2. However, finishing and polishing procedures affect positively the cement line quality in the both groups. Conclusion: The excess cement removal methods had no influence on the vertical misfit and cement line quality for the restorations. The finishing and polishing procedures improved the cement line quality in both groups.
Study of the psychological preparation on the dental care of children with special needs
Authors: Rocha João Carlos 
Published: May 2015

The psychology in Dentistry is a great challenge for the clinicians during the care of their patients. The conditioning of a patient to achieve a behavior meeting the professional’s needs for developing a procedure within the quality standards is necessary. When this conditioning focuses on the child patients the challenge is even greater because the child will use all ways to make difficult the action of the clinician due to fear or discomfort. The ability of the dentist to condition the patient will be directly proportional to the training and theoretical knowledge acquired. Considering the Patients with Special Needs (PSN), this training should be differentiated because there is the physical, cognitive, and the previous dental/medical history in addition to the psychological and emotional difficulties. The aim of this study was to evaluate the profile of the patient to be conditioned satisfactorily and which conditioning techniques would be more efficient to ambulatory dental care of PSN. Thirty patients, both genders, aged from 20 months to 11 years-old who were enrolled at the ambulatory treatment of NEAPE were observed. It was concluded that when there is the cognitive development of the individual, they are able to be conditioned for the ambulatory care; the use of auxiliary methods is important in the conditioning for the ambulatory care of the individuals; the syndromic patients had the best results for the conditioning aiming to the ambulatory care; there was a significant improvement in the behavior of individuals between the first and last appointments.
Complementary and integrative practices inoral health: A Systematic Review
Authors: Filice de Barros Nelson 
Published: May 2015

Abstract Objective: To present a systematic literature review on the use of Complementary and Integrative Practices (CIP) in the field of dentistry. Methods: Randomized, controlled clinical trials (RCT) were selected from the PubMed-MEDLINE data base (2000-2010). The articles were classified according to the type of therapy, level of significance of results, impact factor and area of knowledge of the periodicals. Results: Ninety-one RCTs were included: 42(47%) are on Laser therapy, 32(35%) Phytotherapy, 14(15%) Acupuncture, 2(2%) Homeopathy and 1(1%) on Hypnosis. The results showed negative evidences, particularly for Laser therapy (n=28;31%), whereas Phytotherapy (n=20;22%), Acupuncture (n=11;12%) and Homeopathy (n=2;2%) presented higher frequency of positive results. The RCTs researched were published in journals related to dentistry (n=59;64%), medicine (n=21;23,5%), other areas (n=7;8%) and CIP (n=4;4,5%). Conclusions: It was concluded that there are positive evidences for the use of some types of CIP in oral health. However, they are limited as regards their quality and consistency, with little difference between the positive and negative results, characterizing little force of evidence, and consequently low potential for clinical application, in accordance with the principles of evidence-based dentistry. Keywords: Acupuncture; Homeopathy; Phytotherapy; Hypnosis; Flower Therapy; Laser Therapy.
Sintering dental porcelain with CO2 laser: porosity and mechanical characterization
Authors: Sgura Ricardo , Reis Mariana Cavalcante , Andreeta Marcello Rubens Barsi , Hernandes Antônio Carlos , Medeiros Igor Studart 
Published: May 2015

Aim: This work evaluated dental porcelain sintering by CO2 laser irradiation. Methods: Two commercial veneering porcelains were used: VM7 and VM9 (VITA Zahnfabrik). Porcelain disks (0.35 mm dia. x 2.0 mm) were sintered by a continuous CO2 laser (Coherent, USA – 35 W e ?= 10.6 ?m) in two irradiances (20 and 23 W/cm2) and exposure times: 5 and 10 min. A control group was sintered in a conventional oven following manufacturer’s instructions. After sintering, one of the disks surfaces was mirror polished. Superficial pores (%) were assessed by images obtained in an optical microscope (100x) submitted to the software Image J analysis. Apparent density was measured by Archimedean’s method. Microhardness and fracture toughness (Indentation Fracture - IF) were determined with a Vickers indenter (Shimadzu). Results: Porosity ranged between 4.0 and 5.9% for irradiated specimens; control group had 6.0 and 4.7% of porosity for porcelain VM7 and VM9 respectively. Density of porcelain VM7 irradiated for 10 min. with irradiance of 23 W/cm2 was significantly higher than control group. Microhardness and fracture toughness of irradiated specimens were similar to control. The measurements of some irradiated groups were not possible to achieve because the tests revealed irregular marks after indentation. Conclusions: Porcelain sintering with CO2 laser in some fluences produced a material with superficial porosity similar to that obtained in conventional oven. Microhardness and fracture toughness could not be measured for all irradiated groups suggesting some subsuperficial defect caused by entrapped gases or cracks originated by temperature gradient along the specimen.
Cytotoxicity of non-vital dental bleaching agents in human gingival fibroblasts
Authors: Fernandes Aletéia Massula , Marques Marcia Martins , Camargo Samira Esteves Afonso , Cardoso Paula Elaine , Camargo Carlos Henrique Ribeiro , Valera Marcia Carneiro 
Published: May 2015

Purpose: The aim of this study was to compare several non-vital dental bleaching agents for their in vitro cytotoxicity to human gingival fibroblasts primary cell line.Methods: The cells were cultivated in DMEM and were seed in plates of 96 wells; then, it was exposed to the conditioned medium according to the experimental groups (n=12): G1- SP (sodium perborate) + distilled water; G2- SP + 20% CP (carbamide peroxide); G3- 20% CP; G4- SP + 35% HP (hydrogen peroxide); G5- 35% HP. In the control group (n=12), corresponded to the curve of cell growth and viability, the cells did not receive any treatment. Cell viability was measured photometrically using a MTT assay after a 24h and 48h of exposure period. Data were submitted to ANOVA and Tukey’s tests.Results: All the experimental groups presented high cytotoxicity statically in comparison to the control group. The rank of the most to the least toxic material after 24 hours was: SP + DW > 35% PH > PS + 20% PC > PS + 35% PH > 20% PC; and after 48 hours was: SP + DW > PS + 20% PC > 35% PH > PS + 35% PH > 20% PC. All the bleaching agents had presented cytotoxicity effects, reducing significantly the cell viability, however, in the conditions that the study was conducted the association of sodium perborate with distilled water was the most toxic bleaching agent.
Dental Erosion: an overview on definition, prevalence, diagnosis and therapy
Authors: Picchi Comar Livia , Salomão Priscila Maria Aranda , Martines de Souza Beatriz , Magalhães Ana Carolina 
Published: May 2015

Currently, it has been observed a significant increase in the prevalence of dental erosion as a consequence of frequent exposure to acids from foods, drinks and gastric juice. The aim of this review was to give some new insights about the definition and diagnosis of this condition, to clarify the causal factors and to show the preventive strategies and restorative therapy. Dental erosion is complex condition dependent on the interaction of chemical, biological and behavior factors. The diagnosis is generally performed by the analysis of the clinical appearance of the lesions in combination with the patient’s history. Some new technologies have been developed to help in early diagnosis and to quantify dental erosion in different phases. Preventive measures are established according to the causal factors, which may include the dietary intervention, modification of acidic drinks, and behavioral changes, or the modification of the tooth surface to increase its resistance against acidic attacks. The restorative treatment may range from minimally invasive therapies to multidisciplinary interventions. The clinicians should know how to detect the condition early, so that preventive measures can be applied before the lesions progress. Therapeutic strategies in high-risk patients should be as conservative as possible, involving multidisciplinary and preventive approaches with a periodic control for the success of the treatment. Key-words: Epidemiology, Prevention, Rehabilitation, Treatment, Tooth erosion
Strain Gauge analysis of non-axial loads in three-element implant-supported prostheses
Authors: Sousa Talitha de Cássia Silva , De Lelis Vanda , Miyazi Santos Vivian Mayumi , Nogueira de Melo Nishioka Gabriela , De Oliveira Vasconcellos Luis Gustavo , Sussumu Nishioka Renato 
Published: May 2015

This study evaluated “in vitro”, the microstrain around three external hexagon implants linearly placed after static loadings on non-axial points of Co-Cr superstructures. The implants were inserted into a polyurethane block and their microunit prosthetic abutments were screwed with torque of 20 Ncm. Four strain gauges were linked to the block around the implants. Onto the abutments, Co-Cr superstructures (n = 5) were screwed with torque of 10 Ncm. The static vertical loads of 30 kg were applied for 10 s during 3 repetitions in four non-axial points located perpendicularly to the long axis (A and B) and another two points at the extremity of the superstructure (A` and B`). The data were recorded with the aid of a conditioner of electrical signals and the Strain-Smart software. The results obtained were submitted to Analysis of Variance (ANOVA). It could be concluded that there were no significant differences in the effects of the applications of non-axial loads of this present study (p = 0.6464). Also, there were no differences between the displacement means, 3 mm for A and B; 5 mm for A’ and B’ (p = 0.8731). KeywordsBiomechanics, Dental implant, Dental prosthesis.
Microtensile test in dental research. controversial aspects in statistical analysis (experimental unit and premature failures)
Authors: Barcellos Daphne Camara , Pagani Clovis , Cardoso Mayra , Balducci Ivan 
Published: May 2015

Aims: The aim of this study was to present the controversial aspects in performing inferential statistical analysis with regard to selection of the experimental unit and procedures adopted in the case of pre-test failures.Material and Method: Eighty-seven dissertations and theses in the field of dentistry were evaluated, in which microtensile testing available at three public Universities in the State of São Paulo were performed, namely: School of Dentistry, USP; School of Dentistry, Unesp (Araraquara and São José dos Campos) and the Piracicaba School of Dentistry (Unicamp).Results: As regards the experimental unit, 34 (39.08%) theses and/or dissertations used the “stick” and 53 (60.91%) the “tooth/block” type. With regard to pre-test failures, 9 (10.34%) theses and/or dissertations attributed the value “0”, 6 (6.89%) disregarded the sticks, 2 (2.29%) attributed the minimum value of 2 MPa, 1 (1,14%) the minimum value of 4 MPa, 1 (1.14%) attributed half the minimum value of the group and 68 (78.16%) did not mention the occurrence of pre-test failures.Conclusion: As regards the experimental unit, at present the experimental unit is considered the tooth (or ceramic bloc) and not the stick. With regard to pre-test failures, the following are considered: Attribution of a minimum bond strength value under the experimental condition or in the group considered; expressing the number and percentage of cases of failures under each experimental condition; which failures were included in the statistical analysis and making a comparison between the analysis with exclusion of the sticks and analysis without inclusion of the sticks.
New Trends in Dentin Bonding: Treatment with chlorhexidine, hyaluronic acid, vitaminc C and green tea
Authors: Fonseca Beatriz Maria da , Pleffken Patrícia Rondon , Balducci Ivan , Tay Franklin , Pucci Cesar Rogerio , Araujo Maria Amélia Maximo 
Published: May 2015

Objective: The aim of this study was to evaluate the bond strength of dentin treated with chlorhexidine, hyaluronic acid, vitamin C and green tea. Material and Methods: The roots of 50 bovine teeth were removed and buccal coronal dentin was exposed. After acid-etching, the specimens were divided into 5 groups (n = 10), according to the dentin treatment strategy: CO - untreated dentin; CHX - treated with 2 wt% chlorhexidine for 30 sec; HA - treated with 1 wt% hyaluronic acid for 30 sec; VC - treated with 10 wt% vitamin C for 30 sec; GT - treated a 1% green tea extract for 30 sec. Adper Single Bond was then applied to the treated according to the manufacturer's recommendations. The specimens were restored with a 4-mm thick layer of the resin composite, which was polymerized for 40 sec. The specimens were stored in distilled water at 37°C for 24 h and sectioned into 1x1 mm2 sticks containing the adhesive interface. Microtensile bond strength testing was performed with a universal testing machine at a cross-head speed of 1.0 mm/min. Results: The results were analyzed with one-factor ANOVA and Tukey’s multiple comparison tests. GT group presented the highest values bond strength (29.4±3.1)a, but no significant difference compared to the other experimental groups HA(26.7±3.1)ab, CHX(25.4±2.6)ab and VC(22.4±6.0)b. Bond strengths of experimental groups were not significantly different from the CO. Conclusion: Immediate bond strength was preserved after acid-etched dentin was treated.Keywords: Chlorhexidine. Hyaluronic acid. Vitamin C. Green tea. Bond strength.
Masticatory muscle activity evaluation by electromyography in removable partial denture users
Authors: Amorim José Benedito Oliveira , Rabelo Sylvia Bicalho , Souza Ana Carolina , Corazza Pedro Henrique , De Araújo Rodrigo Máximo , Cavalcanti Sâmia Carolina Mota , Valera Márcia Carneiro 
Published: May 2015

Objectives: The aim of this study was to evaluateby electromyography the activity of the temporalisand masseter muscles in removable partial dentures(RPDs) users, before and after new RPDs installation.Material and Methods: Ten patients were selectedfor this study. All subjects were edentulous in theposterior mandibular region (Kennedy class I orII), fully dentate in the antagonist arch, and dentalprosthesis users, which needed to be replaced. Theelectromyographic activity (EMG) recorded thesuperficial masseter and temporalis muscles, duringthe maximum voluntary bite force and the restposition. Maximum mouth opening was also verified.The measurements were recorded at four specifictimes: using the old prosthesis (T0), right after thenew prosthesis installation (T1), two weeks (T2) andfour weeks (T4) after installing the new prosthesis.All the RPDs were made by an experienced dentistand the same laboratory. Data were statisticallyanalyzed by ANOVA and Tukey tests (? = 0.05).Results: EMG values had high standard deviation atthe time T0. Generally, the mean values decreasedafter new prosthesis installation, especially aftertwo weeks from the installation (T2). During therest position, the left masseter and left temporalismuscles showed statistically significant gradualdecrease in their activities over time. Conclusion:New prostheses have positive effect on the patient’smuscular activity. However, an adaptation period ofthe muscle fibers to the new prosthesis is needed.KeywordsElectromyographic activity; Dental occlusion; Masseter; Removable partial dentures; Temporalis.
Ultimate tensile strength and microhardness of glass ionomer materials
Authors: Perondi Paula Roberta , Oliveira Pedro Henrique Cabral , Cassoni Alessandra , Reis André Figueiredo , Rodrigues José Augusto 
Published: May 2015

Objective: This study evaluated the ultimate tensile strength (UTS) and microhardness (µKH) of conventional (CO) and hybrid resin-modified glass ionomer (RM). Material and methods: Nine specimens to UTS and twelve for µKHN of glass ionomer materials were obtained using special molds. The materials were manipulated and CO groups were allowed to self-cure for five minutes and RM were subjected to light-activation as indicated by manufactures through a glass slide. All specimens were dark-stored in 100% relative humidity for 24h. For UTS test, specimens were tested in tension in a universal testing machine (crosshead speed of 1 mm/min) until failure. For µKHN test a Knoop diamond indenter was used to make five indentations in the upper/light irradiated surface of the specimens. UTS and µKHN data were submitted to one-way ANOVA, followed by Tukey’s test (?= 5%). Results: The results for UTS were: Ionomaster: 7.0 (±1.6)A; Maxxion R: 8.8 (±3.7)A Vidrion R: 8.8 (±3.9)A; ChemFil Rock: 10.7 (±4.6)AB; Vitremer: 13.1 (±3.3)BC; Vitrofil R: 14.9 (±7.8)CD; Ionoseal: 14.5 (±8.2)CD; Resiglass: 16.3 (±2.3)D. The results for µKH: Ionomaster: 24.3 (±6.6)B; Maxxion R: 17.7 (±4.7)A, Vidrion R: 31.0 (±9.4) B; ChemFil Rock: 31.1 (±8.5)B; Vitremer: 20.3 (±3.3)A; Vitrofil R: 16.5 (±5.1)A; Ionoseal: 13.1 (±8.5)A; Resiglass: 21.6 (±5.2)A. Conclusion: It was observed that the hybrid resin-modified ionomers generally have higher cohesive strength than conventional ones, but lower microhardness.
Prevalence of oral lesions in elderly patients on oral cancer prevention campaigns in Parana state Brazil 1989-2013.
Authors: Sassi Laurindo Moacir , Patussi Cleverson , Ramos Gyl Henrique A. , Bixofis Regiane Benez , Schussel Juliana Lucena , Guebur Maria Isabela 
Published: May 2015

Objective: recently, there has been a rapid aging process of the world population. Despite of a longer permanence of natural teeth and a reduction of oral diseases caused by the improvement of life conditions and the provision of health care, the prevalence of oral diseases in the elderly is still considered significant. Therefore, the aim of this study is to evaluate the epidemiological profile of elderly patients (above 60 years old) attended in 25 years of campaigns oral cancer prevention in the Paraná state, Brazil, between 1989 and 2013. Material and Methods: Patients, volunteers, were evaluated during 25 years of oral cancer prevention by the campaign team and all patients were evaluated in a methodical way with inspection of all intra-oral areas. Results: a total of 22.909 patients were attended during the 25 years of projects. Of these, 6.134 were older than 60 years old, with appearance of 1.523 oral lesions during the examination and 4.611 patients had no oral alterations during the dentist evaluation, among those were found injuries by traumatic origin, inflammatory lesions and others types of injury. Conclusion: it is clear the necessity for specialized care and active surveillance of these patients, since it is a consensus in the literature that the best treatment is early diagnosis. It is also necessary the development of epidemiological studies of the elderly population, which are scarce and difficult to elaboration of plans for effective action to meet the specific demands of this age group. Key words: oral cancer, Oral Examination, Oral Health, elderly cancer.