Validity of wax and acrylic as soft-tissue simulation materials used inin vitroradiographic studies

Schropp, Lars; Alyass, Nebras Shawkat; Wenzel, Ann; Stavropoulos, Andreas

doi:10.1259/dmfr/33467269

Cited by 49 publications

(55 citation statements)

References 27 publications

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“…To simulate soft tissues, we used five types of materials in three diverse thicknesses. Both material type and thickness have been widely used 2,5,6,9,10,15,16 with aims to simulate the real anatomical structures. 27,28 In this study, we showed that both the material type and the thickness tested influenced the gain of density in bone tissue as demonstrated by DSR.…”

Section: Discussionmentioning

confidence: 99%

“…1 In those studies, soft-tissue simulators are often used to simulate what is present in vivo. 2 In a clinical situation, when an X-ray beam interacts with soft tissues and reaches the object, its intensity is attenuated, resulting in low-energy photons producing low-density areas in the image. 3 The use of soft-tissue simulation materials having densities similar to the tissues found in patients in a real environment helps avoid exposure of patients to excessive radiation during in vivo studies.…”

Section: Introductionmentioning

confidence: 99%

“…4 Based on literature, the use of soft-tissue simulators, such as acrylic plates, 2,4-8 wax, 2,4,9,10 water, 11-14 wood 4,15,16 and bovine tissue 17 has been tested in different ways with respect to the nature and/or the thickness of the material put around dry mandibles. 2,5,16 It is important that these simulation materials are accurately reproducible, measurable and are ready for use in any circumstances. 18 The influence of soft-tissue simulators on mandible bone radiographic density has been shown previously using digitial intraoral radiography.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of changes in dental and bone radiographic densities in the presence of different soft-tissue simulators using pixel intensity and digital subtraction analyses

Molon

Batitucci²,

Spin‐Neto³

et al. 2013

Dentomaxillofacial Radiology

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of changes in dental and bone radiographic densities in the presence of different soft-tissue simulators using pixel intensity and digital subtraction analyses

Molon

Batitucci²,

Spin‐Neto³

et al. 2013

Dentomaxillofacial Radiology

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“…Simulation of soft tissue attenuation characteristic was achieved by applying 20 layers of pink modeling wax (Cavex, Holand BV modeling wax) to reach 14 mm thickness on the outer surface of the skull while the mandible and maxilla were fixed in centric position (7) .…”

Section: Skull Preparationmentioning

confidence: 99%

Validity of maxillary sinus volumetric measurements using the 3D orthogonal cone beam computed tomography images versus direct skull volumetric measurements: An in vitro study

Hamdy

Hussien

Dahaba

2020

Egyptian Dental Journal

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Introduction: the total volume of maxillary sinus is important for maxillofacial reconstruction, plastic surgeries and prosthetic rehabilitation. It is important to diagnose sinus hypoplasia secondary to craniofacial syndromes, sinus obliteration caused by infections or blood dyscrasis.Aim of the study: The aim of this study was to assess the accuracy of CBCT volumetric measurements of maxillary sinus using the geometric rule of pyramid volume based on CBCT linear measurements versus real skull measurements.Materials and methods: fourteen skulls were scanned using Planmeca Promax 3D MID and the maxillary sinus pyramid height, length and width were measured in cm. The volume of 24 sinuses were calculated from pyramid volume (cm 3 ) = 1/3 Height × Length × Width. The CBCT volumes and the reference standard were analyzed for error assessment using Dahelberg error and Relative Dahelberg Error.Results: 4.3-4.7% was the error obtained from CBCT volumetric measurements using the rule of pyramid volume. 0.9 correlation was detected between the CBCT volume and the reference standard, between the observers and within the same observer.Conclusion: the geometric rule of pyramid volume based on CBCT linear measurements can be used to assess maxillary sinus volume. KEY WORDS: Maxillary sinus, CBCT, linear measurements, pyramid volume, accuracy. (348) Reham Mohamed Hamdy, et al.

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“…It can also influence the density and the contrast of the film, and therefore, the diagnosis accuracy (SCHROPP et al, 2012).…”

Section: A Wave Intensity Is the Disseminated Amount Of Energy Per Unmentioning

confidence: 99%

Salivary gland entrance dose in dental radiology

Lopez¹,

Campos²

2015

cmbio

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Introduction: Soft tissues modify radiation absorption and increase dispersion. It can also influence the density and the contrast of the film, and therefore, the diagnosis accuracy. In order to estimate the relative risk of cancer associated with induction by radiation, it is important to measure radiation doses at organs and tissues. Objective: to evaluate salivary glands entrance dose, with two digital devices in a head and neck phantom. Methodology: Periapical incidences simulations of incisors were conducted and compared with two digital periapical radiological equipment (Kodak® 2200 Intraoral X-ray System) which have similar characteristics. A dry bone skull prototype and an equivalent human tissue material with wax were used. To measure the organ entrance dose: parotid gland and sublingual glands, it was used a solid-state sensor from Radcal®, Accu-Gold® for diagnostic radiology and an ionization chamber from Radcal®, Accu-Gold®, where effective doses were measured in the equipment and in the sensor and then compared. Results: in parotid glands were 0.033 mSv and in sublingual 0.388 mSv. Conclusion: It is important to highlight from the results the importance of using low doses of radiation and the appropriate equipment positioning in order to perform periapical radiological incidences in maxillary and mandibular regions. If the beam it is not corrected positioned, an increase in the radiation dose to organs can occur near to the area of study.

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Validity of wax and acrylic as soft-tissue simulation materials used inin vitroradiographic studies

Abstract: The soft tissues of the average human cheek can be simulated with 13-17 mm wax or 14.5 mm acrylic in in vitro radiographic studies.

Cited by 49 publications

References 27 publications

Comparison of changes in dental and bone radiographic densities in the presence of different soft-tissue simulators using pixel intensity and digital subtraction analyses

Comparison of changes in dental and bone radiographic densities in the presence of different soft-tissue simulators using pixel intensity and digital subtraction analyses

Validity of maxillary sinus volumetric measurements using the 3D orthogonal cone beam computed tomography images versus direct skull volumetric measurements: An in vitro study

Salivary gland entrance dose in dental radiology

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