Resumo: Estudos mostram que os traumatismos na dentição decídua são comuns, podendo trazer também comprometimentos aos dentes permanentes em desenvolvimento. O propósito desta pesquisa foi avaliar os traumatismos em dentes decíduos e as seqüelas nos dentes permanentes sucessores, em crianças atendidas no Pronto Atendimento da Bebê Clínica, da Universidade Estadual de Londrina, entre os anos de 1992 a 2002. Da análise de 1703 prontuários que apresentavam relato de traumatismos nos dentes decíduos, 864 atenderam os critérios de inclusão propostos para este estudo, sendo que 409 crianças foram localizadas e compareceram ao local de exame. Os prontuários destas crianças foram estudados a fim de se obter informações a respeito do trauma. O exame clínico e radiográfico foi realizado com o objetivo de verificar as seqüelas nos dentes permanentes em decorrência dos traumatismos nos antecessores decíduos. Para a análise destas seqüelas, a amostra foi dividida em 2 grupos, sendo o Grupo I constituindo as crianças com apenas uma ocorrência de traumatismo nos dentes decíduos e o Grupo II, aquelas com mais de uma ocorrência. A freqüência de injúrias traumáticas nos dentes decíduos foi de 31,9% no total dos 1703 prontuários avaliados. Das crianças examinadas, o gênero masculino foi o mais acometido (57%) e a idade da criança no momento do trauma entre 6 e 24 meses, a mais observada (38,4%). As quedas de uma forma geral, e entre estas, aquelas causadas pelo andar e correr foram os fatores etiológicos mais predominantes (37,8%). O tempo decorrido entre o trauma e a procura por atendimento foi mais averiguado no periodo de até 1 dia (43,5%). Dos 679 dentes decíduos avaliados, o incisivo central superior direito foi o mais afetado (42,0%) e a subluxação, o tipo de traumatismo mais prevalente ...(Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Studies show dental trauma in primary teeth as common happening and the risk of compromising the permanent teeth in developing process. The purpose of this research was to evaluate the dental trauma in primary teeth and its sequelae in the successor permanent teeth in children attended at Pronto Atendimento da Bebê Clínica, State University of Londrina, from 1992 to 2002. From the analysis of 1703 children presenting cases of dental trauma in primary teeth, 864 attended the criteria of inclusion proposed to this study. From the total above 409 children were located and came to the examine place. The data of these children were studied in order to obtain precise information regarding trauma. The clinical and radiographic exams were carried out with the objective to verify sequelae in the permanent teeth due to traumas caused on the predecessor deciduous. For the analysis of these sequelae the sample was divided into 2 groups: Group I, consist of children with only one occurrence of trauma in the primary teeth and group II, of those with more occurrences. The frequency of traumatic injuries in the deciduous teeth was 31,9% in total of the 1703 cases evaluated. From the examined children, masculine gender was the most compromised (57%) and the age of the child in the moment of the trauma was between 6 and 24 moths (38,4%). Falls in general, among those caused by walking and runnings were the etiologic predominant factors (37,8%). The time between trauma and seeing the dentist was done in a period of a day (43,5%). From 679 deciduous teeth evaluated, the right maxillary central incisor was the most affected (42,0%) and the subluxation, type of trauma more frequent (32,5%). In regard to the treatment recommended to the primary teeth monitoring was the most used ...( Complete abstract click electronic address below) / Orientador: Robson Frederico Cunha / Coorientador: Antônio Ferelle / Banca: Farli Aparecida Carrilho Boer / Banca: Célio Percinoto / Banca: Robson Frederico Cunha / Mestre

Thesis (M.S.)--West Virginia University, 2001. / Title from document title page. Document formatted into pages; contains viii, 97 p. : ill. Includes abstract. Includes bibliographical references (p. 75-83).

Thesis (M.S.)--University of Alabama at Birmingham, 2008. / Title from PDF title page (viewed on Feb. 3, 2010). Includes bibliographical references (p. 52-57).

Thesis (M.S.)--University of Michigan, 1975.

Thesis (M.S.)--University of Michigan, 1975.

Made available in DSpace on 2014-06-11T19:27:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-12-21Bitstream added on 2014-06-13T18:31:56Z : No. of bitstreams: 1 assuncao_lrs_me_araca.pdf: 464091 bytes, checksum: 39cdccddc9b32a15cb7ae244ad3645f3 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Estudos mostram que os traumatismos na dentição decídua são comuns, podendo trazer também comprometimentos aos dentes permanentes em desenvolvimento. O propósito desta pesquisa foi avaliar os traumatismos em dentes decíduos e as seqüelas nos dentes permanentes sucessores, em crianças atendidas no Pronto Atendimento da Bebê Clínica, da Universidade Estadual de Londrina, entre os anos de 1992 a 2002. Da análise de 1703 prontuários que apresentavam relato de traumatismos nos dentes decíduos, 864 atenderam os critérios de inclusão propostos para este estudo, sendo que 409 crianças foram localizadas e compareceram ao local de exame. Os prontuários destas crianças foram estudados a fim de se obter informações a respeito do trauma. O exame clínico e radiográfico foi realizado com o objetivo de verificar as seqüelas nos dentes permanentes em decorrência dos traumatismos nos antecessores decíduos. Para a análise destas seqüelas, a amostra foi dividida em 2 grupos, sendo o Grupo I constituindo as crianças com apenas uma ocorrência de traumatismo nos dentes decíduos e o Grupo II, aquelas com mais de uma ocorrência. A freqüência de injúrias traumáticas nos dentes decíduos foi de 31,9% no total dos 1703 prontuários avaliados. Das crianças examinadas, o gênero masculino foi o mais acometido (57%) e a idade da criança no momento do trauma entre 6 e 24 meses, a mais observada (38,4%). As quedas de uma forma geral, e entre estas, aquelas causadas pelo andar e correr foram os fatores etiológicos mais predominantes (37,8%). O tempo decorrido entre o trauma e a procura por atendimento foi mais averiguado no periodo de até 1 dia (43,5%). Dos 679 dentes decíduos avaliados, o incisivo central superior direito foi o mais afetado (42,0%) e a subluxação, o tipo de traumatismo mais prevalente... / Studies show dental trauma in primary teeth as common happening and the risk of compromising the permanent teeth in developing process. The purpose of this research was to evaluate the dental trauma in primary teeth and its sequelae in the successor permanent teeth in children attended at Pronto Atendimento da Bebê Clínica, State University of Londrina, from 1992 to 2002. From the analysis of 1703 children presenting cases of dental trauma in primary teeth, 864 attended the criteria of inclusion proposed to this study. From the total above 409 children were located and came to the examine place. The data of these children were studied in order to obtain precise information regarding trauma. The clinical and radiographic exams were carried out with the objective to verify sequelae in the permanent teeth due to traumas caused on the predecessor deciduous. For the analysis of these sequelae the sample was divided into 2 groups: Group I, consist of children with only one occurrence of trauma in the primary teeth and group II, of those with more occurrences. The frequency of traumatic injuries in the deciduous teeth was 31,9% in total of the 1703 cases evaluated. From the examined children, masculine gender was the most compromised (57%) and the age of the child in the moment of the trauma was between 6 and 24 moths (38,4%). Falls in general, among those caused by walking and runnings were the etiologic predominant factors (37,8%). The time between trauma and seeing the dentist was done in a period of a day (43,5%). From 679 deciduous teeth evaluated, the right maxillary central incisor was the most affected (42,0%) and the subluxation, type of trauma more frequent (32,5%). In regard to the treatment recommended to the primary teeth monitoring was the most used ...( Complete abstract click electronic address below)

<p>Gleđ je supstrat adhezije direktnih i indirektnih ispuna, ljuspi, splintova, zalivača i ortodontskih bravica. Adhezija između materijala i zubnog tkiva je ključna za uspe&scaron;no sprovođenje različitih stomatolo&scaron;kih intervencija. Ova veza, bez obzira na brojnost i raznovrsnost novih materijala nije u potpunosti re&scaron;ena. CILJ: Ispitati mehaničke i hemijske osobine gleđi nakon tretmana različitim kondicionerima za pripremu gleđi. Odrediti tvrdoću i modul elastičnosti, odrediti hemijski udeo minerala kalcijuma i fosfata u povr&scaron;inskom sloju gleđi pre i posle nagrizanja različitim kiselinama i utvrditi uticaj prizmatičnosti gleđi na stepen nagrizanja gleđi primenom različitih kiselina. METODE: Sprovedeno je in vitro istraživanje na ekstrahovanim humanim zubima. U odnosu na primenjeni kondicioner analizirano je 192, od toga 96 uzoraka stalnih zuba i 96 uzoraka mlečnih zuba. Pripremljeni uzorci gleđi su analizirani pre i nakon primene četiri vrste kondicionera: 37% ortofosforne kiseline (Kerr, Gel etchant), 10% poliakrilne kiseline (GC, Dentin Conditioner), monomera estra fosforne kiseline (GC G bond), hidroksietilmetakrilata sa fosfornom kiselinom (3M Unitek, Transbond&trade; Plus Self Etching Primer). Određivana je tvrdoća i modul elastičnosti gleđi nanoindentacijom, struktura povr&scaron;inskog sloja gleđi pomoću skening elektronske mikroskopije, dok je hemijski sastav povr&scaron;inskog sloja gleđi određen metodom energetske disperzione spektroskopije. Rezultati modula elastičnosti unutar grupe mlečnih zuba ukazali su na postojanje statistički značajnih razlika između rezultata netretirane okluzalne povr&scaron;ine i svih tretiranih uzoraka okluzalne povr&scaron;ine, dok analiza tvrdoće gleđi u istoj grupi, ukazala je na statistički značajne razlike između vrednosti netretiranih i svih tretiranih uzoraka, na svim povr&scaron;inama, osim na uzorcima bukalne povr&scaron;ine tretiranih poliakrilnom kiselinom. U grupi stalnih zuba, postoje statistički značajne razlike vrednosti modula elastičnosti između uzoraka tretiranih ortofosfornom kiselinom, bez obzira na povr&scaron;inu zuba, u odnosu na grupe u kojima su kori&scaron;ćeni drugi kondicioneri, osim kada su poređeni uzorci lingvalne povr&scaron;ine stalnih zuba tretirani ortofosfornom kiselinom sa uzorkom - iste povr&scaron;ine tretirane Transbondom. Rezultati tvrdoće gleđi stalnih zuba pokazali su statistički značajne razlike između netretirane, kontrolne grupe i svih grupa testiranih kondicionera, bez obzira na ispitivanu povr&scaron;inu zuba. Svaki primenjeni kondicioner promenio je povr&scaron;insku morfologiju uzorka. Ortofosforna i poliakrilna kiselina, u najvećoj meri su uticala na pojavu polja nagrizanja tipa 1 i tipa 2. Primenom G bonda i Transbonda pored tipa 1, veliki udeo polja nagrizanja bio je tipa 5. Analiza hemijskih elemenata povr&scaron;inskog sloja gleđi uzoraka pre i nakon kondicioniranja ukazala je na smanjenje udela analiziranih elemenata, osim kiseonika čiji se maseni udeo povećao nakon tretmana sa svim kondicionerima u grupi stalnih i mlečnih zuba. ZAKLJUČAK: Vrednosti tvrdoće gleđi i vrednosti modula elastičnosti značajno se smanjuju nakon nagrizanja gleđi u stepenu koji je u zavisnosti od primenjenog kondicionera. Efekat nagrizanja aprizmatične gleđi je značajno manji u odnosu na stepen nagrizanja prizmatične gleđi, primenom svih testiranih kondicionera. Hemijski udeo minerala kalcijuma i fosfata u povr&scaron;inskom sloju gleđi je značajno niži posle nagrizanja u odnosu na vrednosti pre nagrizanja gleđi, međutim sam odnos Ca i P se ne menja.</p> / <p>Dental enamel is a substrate for the adhesion of direct and indirect fillings, venners, splints, fissure sealants and orthodontic brackets. Adhesion between the material and dental tissue is key to success of various interventions in dentistry. Despite the abundance and variety of new materials, adhesion has not been fully resolved. OBJECTIVES: To investigate the mechanical and chemical properties of the enamel after treatment with different conditioners. Determine the hardness and modulus of elasticity, the chemical content of calcium and phosphate minerals in the surface layer of the enamel before and after etching with different acids, and define the effect of enamel prismaticity on the degree of demineralisation by applying different acids. METHODS: An in vitro study was performed on extracted human teeth. In relation to the conditioner used, 192 were analyzed, of which 96 were permanent teeth and 96 were decidous teeth. Prepared enamel samples were analyzed before and after the application of four types of conditioner: 37% orthophosphoric acid (Kerr, Gel etchant), 10% polyacrylic acid (GC, Dentin Conditioner), phosphoric acid ester monomer (GC G bond), hydroxyethyl methacrylate with phosphoric acid ( 3M Unitek, Transbond &trade; Plus Self Etching Primer ). The hardness and modulus of elasticity of the enamel were determined by nanoindentation, the structure of the enamel surface layer by scanning electron microscopy, while the chemical composition of the enamel surface layer was determined by energy dispersive spectroscopy. RESULTS: The results of the modulus of elasticity within the group of decidous teeth indicated statistically significant differences between the results of untreated occlusal surface and all treated occlusal surface samples, while the analysis of the hardness of the enamel in the same group indicated statistically significant differences between the values of untreated and all treated samples, on all surfaces except buccal surface samples treated with polyacrylic acid. In the group of permanent teeth, there are statistically significant differences in the value of the modulus of elasticity between the samples treated with orthophosphoric acid, regardless of the tooth surface, compared to the groups in which other conditioners were used, except when the samples of the lingual surface of permanent teeth were treated with orthophosphoric acid in comparison to same sample group treated with Transbond. The results of the hardness of the permanent tooth enamel showed statistically significant differences between the untreated, control group and all groups of conditioners used, regardless of the tooth surface tested. Each conditioner applied changed the surface morphology of the sample. Orthophosphoric and polyacrylic acid, to a large extent, influenced the appearance of etching patterns type 1 and type 2. Using G bond and Transbond alongside to type 1, a large proportion of the etching pattern was type 5. Analysis of the chemical components of the surface layer of the enamel samples before and after conditioning indicated reduction of the proportion of analyzed elements, except for oxygen whose mass fraction increased after treatment with all conditioners in the permanent and deciduous teeth group. CONCLUSION: The values of the hardness of the enamel and the values of the modulus of elasticity decrease significantly after etching of the enamel to a degree that depends on the conditioner applied. The etching effect on aprismatic enamel is significantly smaller than the degree of demineralisation of the prismatic enamel in all conditioners tested. The chemical content of calcium and phosphate minerals in the surface layer of the enamel is significantly lower after the conditioning, however the Ca and P ratio does not change.</p>

<p>UVOD Početne karijesne lezije gleđi (bele mrlje) se defini&scaron;u kao područija demineralizovane gleđi, koja nastaju kao posledica neadekvatnog higijensko-dijetetskog režima. Prevencija belih mrlja je neophodna, kako bi se dobio maksimalan učinak terapije fiksnim ortodontskim aparatima. U prevenciji i terapiji belih mrlja se primenjuju preparati na bazi kazein- fosfopeptid &ndash; amorfnog kalcijum fosfata (CPP-ACP) i preparati na bazi fluorida. Ciljevi istraživanja su bili da se ispita prisustvo početnih karijesnih lezija gleđi, nakon tretmana fiksnim ortodontskim aparatima i da se istraži uspe&scaron;nost terapije početnih karijesnih lezija gleđi. MATERIJAL I METODE RADA U studiju je bilo uključeno 100 pacijenata, uzrasta od 15-50 godina, kod kojih je indikovana terapija fiksnim ortodontskim aparatima na Klinici za stomatologiju Vojvodine. Pacijenti su bili podeljeni u dve grupe, eksperimentalnu (pacijenti koji su koristili preparate na bazi kazein- fosfopeptid &ndash; amorfnog kalcijum fosfata i standardne preparate za oralnu higijenu) i kontrolnu (koji su koristili samo standardne preparate za oralnu higijenu). Analizirane su fotografije pacijenata napravljene pre početka tretmana, nakon uklanjanja fiksnih ortodontskih aparata i nakon terapije početnih karijesnih lezija. Formirana je baza podataka, koja je bila kori&scaron;ćena za potrebe ovog istraživanja, u okviru &bdquo;Onyxceph&ldquo; softverskog programa. U istraživanju se koristio upitnik, sastavljen većinom od pitanja zatvorenog tipa. REZULTATI Rezultati istraživanja pokazuju da je većina ispitanika bila ženskog pola (68%). Početne karijesne lezije su bile če&scaron;će dijagnostikovane kod mu&scaron;kog pola. Najveći broj pacijenata je bio iz grupe mlađeg odraslog doba (42%) i adolescenata (32%). Kod 73% pacijenata, koji su pro&scaron;li tretman fiksnim ortodontskim aparatima, dijagnostikovane su početne karijesne lezije zuba na kraju tretmana. Pacijenti koji su vi&scaron;e puta u toku dana konzumirali konditorske proizvode, u toku ortodontskog tretmana, su imali najvi&scaron;i procenat belih mrlja (87,5%). ZAKLJUČCI Potvrđene su obe hipoteze: 1. Prevalencija početnih karijesnih lezija gleđi nakon fiksne ortodontske terapije bila je vi&scaron;a od 60%, kod pacijenata koji su minimum godinu dana nosili fiksni ortodontski aparat. 2. Terapija belih mrlja preparatima Tooth Mousse (CPP-ACP) je dala značajno bolje rezultate, u odnosu na grupu ispitanika koji su koristiti samo standardna sredstva za održavanje oralne higijene. Na osnovu dobijenih rezultata kliničkih istraživanja može se zaključiti da je prevalencija početnih karijesnih lezija gleđi proporcionalno veća kod pacijenata koji su imali slabiju oralnu higijenu u toku ortodontskog tretmana, u poređenju sa pacijentima koji su imali visoku svest o važnosti higijensko-dijetetskog režima. Primena Tooth Mousse pasta u tretmanu početnih karijesnih lezija gleđi od značajne je važnosti za remineralizaciju zubne gleđi. Dužina trajanja ortodontskog tretmana nije dovedena u direktnu vezu sa pojavom početnih karijesnih lezija gleđi.</p> / <p>INTRODUCTION The initial carious lesions (white spots) indicate an area of demineralization of enamel as a result of an inadequate hygiene-dietary regime. The prevention of white spots lesions (WSL) is necessary in order to obtain the maximum effect of the therapy with fixed orthodontic appliances. In the prevention and treatment of white spots, products based on casein-phosphopeptide-amorphous calcium phosphate (CPP-ACP) are applied as well as preparations based on fluoride. The aims of the study were to examine the presence of initial carious lesions on the surface of the tooth after treatment with fixed orthodontic appliances and to assess the success of the therapy of initial caries lesions. MATERIAL AND METHODS The study included 100 patients aged 15-50 who were treated with fixed orthodontic appliances, at the public Dentistry Clinic of Vojvodina. Patients were divided into two groups: experimental (patients who used Tooth Mousse paste and standard oral hygiene products) and control group (using only standard oral hygiene products). The photos of patients were made and analyzed in three stages of the study - before the beginning of the treatment, after the removal of fixed orthodontic appliances and after the therapy of initial caries lesions. Using the &quot;Onyxceph&quot; software program, the database was created, which was used for the purposes of this research. The questionnaire composed mostly of close-ended questions was used for the purpose of this survey. RESULTS The restates of this study indicated that a majority of respondents were female. (68%). The initial carious lesions were more commonly diagnosed in men. The majority of patients with WSL were in group of young adult people (42%) and adolescents (32%). In 73% of all patients who were treated with fixed orthodontic appliances, were diagnosed WSL on the end of the orthodontic treatment. Patients who consumed confectionery products several times during the day, during the orthodontic treatment, had the highest percentage of white spots lesions (87.5%). CONCLUSION Both hypotheses have been confirmed: 1.The prevalence of initial carious lesions of the tooth enamel after fixed orthodontic therapy was higher than 60% in patients who had fixed orthodontic appliances for at least a year. 2. White spot therapy with Tooth Mousse&#39;s products showed significantly better results compared to a group of subjects who only used standard oral hygiene products. On the basis of the obtained results of clinical trials, it can be concluded that the prevalence of initial caries lesions is proportionally greater in patients with lower oral hygiene during orthodontic treatment, compared to patients who had higher awareness of the importance of the hygiene-dietary regime. The use and application of Tooth Mousse paste in the treatment of initial carious lesion is vital for the re-mineralization of the enamel surface.</p>