Three-Dimensional Digitalized Surface and Volumetric Analysis of Posterior Prefabricated Zirconia Crowns for Children

Lee, Hyeonjong; Chae, Yong Kwon; Lee, Hyo-Seol; Choi, Sung Chul; Nam, Ok Hyung

doi:10.17796/1053-4625-43.4.2

Cited by 10 publications

(16 citation statements)

References 10 publications

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“…However, the implementation of prefabricated zirconia crowns is not free of limitations and drawbacks. The latter might require a greater amount of tooth reduction [17,18], whereas, their increased hardness might lead to tooth wear of the antagonist teeth [13]. Finally, bond strength and surface alteration still constitutes a challenge [19,20].…”

Section: Introductionmentioning

confidence: 99%

Surface, Microstructural, and Mechanical Characterization of Prefabricated Pediatric Zirconia Crowns

Diener

Polychronis

Erb³

et al. 2019

Materials

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The purpose of this study was to characterize the surface roughness, the microstructure, and mechanical properties of four prefabricated zirconia pediatric crowns. Ten prefabricated crowns from four different manufacturers (Cheng Crowns Zirconia), (EZCrowns), (NuSmile ZR), and (Zirconia Pediatric Crowns) were included in this study. The surface roughness parameters (Sa, Sq, Sz, Sc, and Sv) of all samples were studied by optical profilometry and then the microstructure was studied by Raman spectroscopy. Then, all samples were embedded in epoxy resin and after metallographic polishing, the Martens hardness (HM), indentation modulus (EIT), elastic index (ηIT), Vickers hardness (HV), and fracture toughness (KIC) were identified by the Instrumented Indentation Testing (IIT). All data were statistically analyzed by a one-way ANOVA and a Tukey multiple comparison test at α = 0.05. Only the tetragonal phase of zirconia for all materials tested was identified after Raman analysis. However, statistically significant differences were found among the surface roughness parameters, HV and KIC, while no differences were allocated for HΜ, EIT, and ηΙΤ. Although the materials tested shared a similar microstructure, significant differences in surface roughness parameters HV and KIC were identified and, thus, differences in their clinical performance were anticipated.

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Section: Introductionmentioning

confidence: 99%

Surface, Microstructural, and Mechanical Characterization of Prefabricated Pediatric Zirconia Crowns

Diener

Polychronis

Erb³

et al. 2019

Materials

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“…This was attributed to the fact that patients between age 0-5 years are more prone to early childhood caries (Innes, 2015). But this was contradictory with the indings of previous studies by Choi (2016)and Lee (2019), whose indings showed that Zirconia crowns were more prevalent when compared to Stainless steel crowns. This can be attributed to the fact that stainless steel crowns are not aesthetically appealing, according to studies by Maciel (2017) and Abdulhadi (2017), which showed that parents of pediatric patients showed more concern towards aesthetics.…”

Section: Resultsmentioning

confidence: 85%

Use of stainless steel crowns and zirconia crowns in posterior primary teeth for children in different age groups

S¹,

Ravindran²,

Ramanathan³

2020

ijrps

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Children are more susceptible to Early Childhood Caries and trauma. Post endodontic treatment, it is necessary for coverage of the treated teeth, and full crowns are considered to be the best option for the same. Preformed crowns for primary molars are available in many sizes and materials to be placed over decayed or developmentally defective teeth. They can be made completely of stainless steel, stainless steel with a white veneer cover or made wholly of a white ceramic material when aesthetics is concerned. The main aim of this study is to assess the prevalence of usage of stainless steel crowns and zirconia crowns in posterior teeth for pedo patients in different age groups. 89000 case sheets were reviewed between June 2019 - March 2020 for possible inclusion and exclusion criteria. Case sheets of 1496 pediatric patients who underwent stainless steel crown and zirconia crown placement in posterior teeth were obtained from a Private Dental Institute. Collected data were analysed using SPSS statistics software. Results showed that stainless steel crowns were more prevalently used among all age groups (99.54%) and were more prevalent among the age group 0-5 years (69.61%). Stainless steel crowns were also found to be more prevalent among male pediatric patients (57.80%). In Conclusion, stainless steel crowns were most prevalent among all age groups and are more prevalent among male pediatric patients.

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“…Moreover, the surface morphology of the PZCs affects this phenomenon. A study investigating the thicknesses of the PZCs reported that variations in thickness appear at line angles, which indicates that more appropriate tooth preparation is required in the line angle [ 13 ].…”

Section: Discussionmentioning

confidence: 99%

“…Consequently, they should require a passive fit, for which repetitive tooth preparations are required. This could lead to excessive reduction of the tooth structure [ 12 , 13 ]. Furthermore, as the inner and outer shapes of the PZCs are different from those of the SSCs, special care must be taken during tooth preparation.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, as the inner and outer shapes of the PZCs are different from those of the SSCs, special care must be taken during tooth preparation. According to a study that analyzed the inner and outer shapes of the PZCs and SSCs, the thickness of the SSCs is constant at approximately 0.2 mm regardless of the regions, while that of PZCs varies in the range of 0.3–0.8 mm, depending on the regions [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of 3-Dimensional Visual Guides for Preparing Pediatric Zirconia Crowns: An In Vitro Study

Kang

Lee

Chae

et al. 2020

IJERPH

Self Cite

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This study evaluated the feasibility of a tooth preparation guide for prefabricated zirconia crowns (PZCs). Three-dimensional surface data for PZCs of the left maxillary primary first molar and left mandibular primary second molar were obtained using a model scanner. The tooth preparation data were digitally designed to harmonize with the adjacent teeth on the mixed dentition model and visualized using a color-coded map, which presents the required amount of tooth reduction. Twenty participants were recruited for preparing teeth with and without using the tooth preparation guide. The following three parameters were evaluated: tooth preparation time, harmony score, and amount of tooth reduction. The preparation time when using the guide was significantly reduced (p < 0.05), and a significant difference was observed in the harmony scores for the maxillary primary first molar preparation. Furthermore, the amount of tooth reduction was significantly different for both maxillary and mandibular primary molars (p < 0.05) in terms of the occlusal distal surface and buccal line angle in the maxillary primary first molars, and the smooth surfaces, proximal surfaces, and mesial line angles in the mandibular primary second molars. Thus, the results suggest that a tooth preparation guide could facilitate better tooth preparation for PZCs.

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Three-Dimensional Digitalized Surface and Volumetric Analysis of Posterior Prefabricated Zirconia Crowns for Children

Cited by 10 publications

References 10 publications

Surface, Microstructural, and Mechanical Characterization of Prefabricated Pediatric Zirconia Crowns

Surface, Microstructural, and Mechanical Characterization of Prefabricated Pediatric Zirconia Crowns

Use of stainless steel crowns and zirconia crowns in posterior primary teeth for children in different age groups

Feasibility of 3-Dimensional Visual Guides for Preparing Pediatric Zirconia Crowns: An In Vitro Study

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