A technique for sequentially reproducing intraoral film

Wege, William R.

doi:10.1016/0030-4220(67)90537-3

Cited by 17 publications

(3 citation statements)

References 4 publications

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“…Although bite-wing radiographs have been widely used in epidemiologieal surveys and clinical trials the efficiency aud validity of many of these studies has been affected by the loss of information due to poor radiographic technique (111)-Ihere are three main reasons for this: overlapping interproximal surfaces, poor positioning of film and the lack of reproducibility of the technique. Several investigators (12)(13)(14)(15) have tried to improve the reproducibility of their radiographs by using the teeth to relocate an aiming device in the mouth. This has been accomplished by taking an impression of the teeth using wax, aerylic resin or rubber itnpression material and good reprodueibility was reported in the studies that evaluated sueh methods.…”

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Investigation into the relationship between deviations in X‐ray angulation and images of proximal overlapping on bite‐wing radiographs

McDonald

1984

Comm Dent Oral Epid

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Eleven child skulls were radiographed through a range of 50 degrees by varying the horizontal angulation of the X-ray beam in steps of 2 or 5 degrees. The changes in the width of overlapping contact images and the ranges through which no overlap occurred were measured. A linear relationship between changes in X-ray beam angulation and overlap width was found in all the skulls. Using the data it was calculated that for each increase in overlap width of 0.1 mm, 95% of the deviations in X-ray beam angulation were less than 2.5 degrees. The findings of this study suggested that the positioning of the X-ray beam so as to cause no overlapping is at best difficult, and at worst impossible. They also emphasize the importance of using identical projections in estimating the progress of carious lesions on radiographs since small changes can cause overlaps. The use of methods that reduce the error in repositioning the X-ray beam may be important in reducing methodological errors in clinical research.

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confidence: 99%

Investigation into the relationship between deviations in X‐ray angulation and images of proximal overlapping on bite‐wing radiographs

McDonald

1984

Comm Dent Oral Epid

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“…It has been stated that to produce serial periodic identical radiographs the foe us-to-object, and the object-to-film distance, the horizontal and vertical angulation ofthe X-ray beam, the position ofthe film in relation to the object, the film density and contrast must be kept constant (13). Several attempts have been made to restrict errors in horizontal and vertical angulation ofthe X-ray beam by recording an impression ofthe teeth on wax or acrylic bite blocks which were fixed to the film holding device (13)(14)(15)(16)(17). Several of these authors (14,16) attempted to evaluate the reproducibility of their methods with seemingly good results.…”

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confidence: 99%

A method to reduce interproximal overlapping and improve reproducibility of bitewing radiographs for use in clinical trials

McDonald

1983

Comm Dent Oral Epid

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To improve the quality of bitewing radiographs a Bite Registration Technique (BRT) was developed by modifying a commercially available Rinn XCP Instrument. The modification involved using a rubber impression material to register the subject's bite so that the subsequent replacement of the instrument in the mouth was guided by the registration indentations. A total of 240 radiographs were analysed to determine the frequency and severity of the overlapping and the degree of deviation in the horizontal angulation between the subsequent films. Approximately half the films were taken with BRT and the other half were taken with the unaltered Rinn SCP Instrument (without BRT). Two radiographs were taken of each side of the mouth. Only 11.6% of the proximal surfaces had more than half the enamel overlapped 'with BRT' compared with 33% 'without BRT'. In addition, when using the BRT, the initial and the subsequent radiographs of each child were more alike than 'without BRT'. Ninety percent were virtually identical; the mean difference in width of the largest overlap between the two films was 0.11 mm. To check the validity of these findings, 100 radiographs from a previously published clinical trial which used similar aged children and also used a Rinn SCP Instrument (modified), were analysed used the same criteria. The results obtained were similar to the 'without BRT' results; 30% of the proximal surfaces had more than half the enamel overlapped. Improved accuracy allowed a narrower X-ray beam to be used, thus reducing patient irradiation. The use of the Bite Registration Technique is recommended when a high degree of diagnostic accuracy is desired in clinical trials involving primary dentitions.

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“…Sistemas não padronizados são assim chamados porque não proporcionam uma relação constante entre o tubo de raios X, o filme, e o objeto a ser radiografado (UPDEGRAVE, 1967(UPDEGRAVE, , 1968EGGEN, 1970 Com a utilização da fabricação de stents de acrílico padronizados, e seu uso nas superfícies oclusas dos dentes na região de interesse, esta deficiência é reduzida (WEGE, 1967;DUCKWORTH, 1983). O stent padronizado é anexado ao tubo de raios X através de uma barra de metal.…”

Section: Técnicas Radiográficas Para Obtenção De Radiografiasunclassified

Esquema de auxílio ao diagnóstico de reabsorção óssea periodontal através de subtração digital de radiografias odontológicas

Rodrigues¹

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A Deus, energia suprema que conduziu e guiou meus passos. Aos meus pais, Fátima e Roberto pelo constante apoio e estímulo ao meu crescimento moral, intelectual e cristão. Por me ensinar a seguir meus sonhos e construir meu caminho, pelo apoio que me deram durante toda a realização deste trabalho, e cuja maior herança tiveram a oportunidade de me dar: o estudo, sem o qual eu não teria chegado até aqui. Ao meu irmão Argeu Vinícius, meu psicólogo lindo, pela amizade e momentos de alegria. Ao Julio César, pelo carinho, amor, amizade, companheirismo. Por suportar os momentos que estive ausente. Pela paciência. Pelas palavras certas, nas horas certas, que sempre me acalentam. Pelo cuidado. À minha avó Maria Rosa (in memorian) afetuosamente viva em meu coração. A minha avó Iracema, pelo carinho. Aos meus tios, tias, primos e primas que sempre torceram por mim. Ao meu orientador, Prof. Dr. Homero Schiabel, pelos ensinamentos, orientações, compreensão e apoio, ao longo de todo este trabalho, modificando, de forma significativa, minha vida profissional. Ao meu amigo, Ms.(quase Dr.) Maurício Escarpinati que, gentilmente, acolheu meu projeto, dispôs-se a me auxiliar, corrigir e incentivar o rumo deste trabalho. Às idas a Bauru. À amizade, aos momentos de descontração no laboratório, aos passeios que de vez em quando nos tirava do laboratório, aos almoços aos domingos, e eventuais durante a semana, né Jú, obrigada, pois era você quem preparava. À Dra. Izabel Regina F. Rubira-Bullen que contribuiu para a construção deste trabalho, pelas radiografias cedidas, pelo suporte, pela ajuda a sanar minhas dúvidas na área da odontologia, pelo carinho e dedicação. Obrigada! À Patrícia, uma grande amiga que fiz ao longo do Mestrado. Pelos momentos em que felizes, celebramos, e os que tristes, choramos. Por dividir comigo a kit, e fazer com que os meus dias em São Carlos fossem mais alegres, malucos, divertidos. Pelas conversas desde a hora que acordávamos ate a hora que íamos dormir, ou que eu dormia, e ela continuava falando. Por me acolher em Bauru, quando tinha que ir até a USP de lá. Companheira de todas as horas. Chegamos ao final! Aos amigos do LAPIMO: Mogi, Dr. Marcelo Andrade, pelos momentos de brincadeira e descontração que fazíamos no laboratório, pela disposição em esclarecer minhas dúvidas e pelas explicações, por me ajudar quando fiquei doente em São Carlos; à Ana Cláudia M., pela amizade, conselhos, sugestões, pelo acolhimento quando cheguei a São Carlos; ao Cláudio, pela amizade, e pelos momentos de brincadeira (que para ele são sustos, tapas no meu braço enquanto estava digitando um texto, rs); à Vivian, pela amizade, e pelo seu alto astral irradiante e aos demais que tornaram a convivência no laboratório mais feliz e alegre:

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A technique for sequentially reproducing intraoral film

Cited by 17 publications

References 4 publications

Investigation into the relationship between deviations in X‐ray angulation and images of proximal overlapping on bite‐wing radiographs

Investigation into the relationship between deviations in X‐ray angulation and images of proximal overlapping on bite‐wing radiographs

A method to reduce interproximal overlapping and improve reproducibility of bitewing radiographs for use in clinical trials

Esquema de auxílio ao diagnóstico de reabsorção óssea periodontal através de subtração digital de radiografias odontológicas

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