Assessment of a non-elastomeric polymer for the replication of tooth surface in vivo

Cowell, C R; Saxton, C. A.

doi:10.1016/0300-5712(78)90244-0

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…Walsh & Basu (1987) showed that the most accurate and reliable replicating technique used an epoxy resin replica formed from an addition-cured silicone impression of the specimen and further studies have confirmed this reliability and efficacy for producing non-invasive repUcas . Whilst little research has been published on the dimensional accuracies of these techniques (Goto & Machida 1977, Cowell & Saxton 1978, Walsh & Basu 1987) the accuracy per se was not important in this study. The presence or absence of root-face cracking was the only factor recorded, with no attempt made to quantify the extent ofthe cracking.…”

Section: Discussionmentioning

confidence: 84%

Root‐end cavity preparation using the MicroMega Sonic Retro‐prep Tip™. SEM analysis

et al. 1996

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The objective of this laboratory study was to compare root-end cavities prepared with sonic Retro-prep tips in a MM1500 Sonic Air handpiece with those created by burs in a conventional handpiece. A total of 80 single-rooted extracted human teeth with mature apices and straight canals were included in the study. Four groups of 20 extracted teeth were prepared as follows: I, a 3-4 mm root-end resection perpendicular to the long axis of the root, with a size 40 sonic Retro-prep tip creating an apical cavity 3 mm into root canal system; II, a 45 degrees bevel of the root-face removing a 3-4 mm root segment and root-end preparation as per group I; III, root-end resection as per group I, with an apical cavity prepared using a size 010 inverted cone bur 3 mm down the long axis of the root; IV, resection as per group II, followed by an apical cavity preparation with a size 010 inverted cone bur 3 mm into the root canal system. The apical root portion and root-end cavities were replicated and prepared for SEM analysis at x 20 and x 80 magnification. The degree of chipping associated with the margin of the root-end cavities, as evaluated with a standard grading system, and the incidence of root-face cracks were noted. Marginal chipping of root-end cavities prepared using sonic instrumentation was significantly worse than that produced by burs (P < 0.001). Perpendicular root-end resections showed significantly better scores than bevelled root-end resections (P < 0.005). The incidence of root-face cracking was low with no significant difference between the experimental groups.

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Section: Discussionmentioning

confidence: 84%

Root‐end cavity preparation using the MicroMega Sonic Retro‐prep Tip™. SEM analysis

et al. 1996

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“…Dentre essas aplicações, podem ser destacados os estudos que utilizaram a técnica de réplica para observar a microestrutura dos tecidos duros dentários 40,112,28,17,105,80,57,70,110 , a abrasividade de dentifrícios 35 , a superfície de restaurações 50,122,49,29,77 , a interação de diferentes materiais com as estruturas dentárias 121,128 , a micromorfologia de tecidos moles e placa dental 68,124,125,106,9,107 , e o desenvolvimento de lesões cervicais não cariosas e as características de suas superfícies 25,8,4,14,127,11,9,10,78,13,62 .…”

Section: Pacunclassified

“…Autores 50,5,28,25,54,122,124,2,8,4,125,14,106,127,11,9,10,107,78,27,33,13,49,80,62,128,29,36,77,57,70,110 recomendam as resinas epóxicas como material adequado para obtenção de …”

Section: Obtenção Das Réplicas Positivasunclassified

“…As técnicas de réplica relatadas na literatura utilizaram desde polietireno 40 , películas de celoidina embebidas em acetona 87,112 , até materiais de moldagem elastoméricos 50,49,105 , como as siliconas de condensação 35,5,28,67,25,54,122,2,4,14108,78 e as siliconas de adição 69,68,124,8,86125,106,127,11,9,10,107,27,33,121,17,80,128,29,36,77,57,70,110. . Um dos objetivos do presente trabalho foi avaliar a capacidade de reprodução da superfície dentinária, por meio da técnica de réplica, utilizando-se uma silicona de adição de consistência ultra-leve e uma resina epóxica.…”

Section: Moldagem Da Superfície Dentináriaunclassified

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Avaliação da técnica de réplica para análise in vitro e in vivo das alterações da superfície da dentina hiperestésica e tratada com oxalato de potássio.

Martineli¹

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In situ replication techniques: II. Quantitative methodologies for replicate materials

Kusy

Whitley

1985

J. Biomed. Mater. Res.

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Because replicate materials have requirements different from those of recording or impression materials, quantitative methodologies were sought using commercial impression materials. Two satisfactory objective techniques resulted, a laser-scattering and a capillary flow test. Using high-resolution gratings to stimulate tooth detail (less than 1 micron), the reproduction quality of 36 two-stage replicas was determined in diffraction, reflection, and in an unblazed state. Using precision bore glass tubes (0.25, 0.5, 1, and 2 mm diameters) to simulate the high-energy surface of enamel, the flow characteristics of nine elastomers (the first stage replicates) and four epoxies (the second stage replicates) were determined at isobaric conditions. Because the laser spot size was relatively large (0.6 mm) and the pressure differential was small (25 mm Hg), both the global resolution and the low shear rate characteristics could be measured. Of the commercial materials tested, Reprosil Light had the best combination of fluidity and resolution, regardless of which positive material was used. Although Permagum Low, Silene Wash, and Xantopren Blue scored high in one of the two tests, none of these materials could compare to Reprosil Light within the context described herein.

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Assessment of a non-elastomeric polymer for the replication of tooth surface in vivo

Cited by 6 publications

References 16 publications

Root‐end cavity preparation using the MicroMega Sonic Retro‐prep Tip™. SEM analysis

Root‐end cavity preparation using the MicroMega Sonic Retro‐prep Tip™. SEM analysis

Avaliação da técnica de réplica para análise in vitro e in vivo das alterações da superfície da dentina hiperestésica e tratada com oxalato de potássio.

In situ replication techniques: II. Quantitative methodologies for replicate materials

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