Reporting numeric values of complete crowns. Part 1: Clinical preparation parameters

Tiu, Janine; Al-Amleh, Basil; Waddell, John Neil; Duncan, Warwick

doi:10.1016/j.prosdent.2015.01.006

Cited by 23 publications

(30 citation statements)

References 23 publications

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“…In the current study, TOC of the maxillary teeth did not differ from the mandibular teeth' TOC. This is in contrast to Alhazmi et al (34) and Tiu et al (44) who found greater TOC in mandibular teeth.…”

Section: Discussioncontrasting

confidence: 95%

“…Molars in general had the highest values of the convergence among the other teeth in BL and MD dimensions. This is consistent with Ghafoor et al (25,38) Alhazmi et al (34), and Tiu et al (44). The presence of cheeks, limited visibility, and the difficulty of access to them were suggested as causal factors (33,38).…”

Section: Discussionsupporting

confidence: 87%

“…Should not be overlooked, TOC more than 20 degrees sharply increases the stress on the cement (18), and negatively affects the retention and resistance (43). In Tiu et al (44) study, when mean BL and MD TOC of the GP were calculated, they were 42.2 degrees and 34.1 degrees, respectively. These values were higher than the values obtained by GP in this study.…”

Section: Discussionmentioning

confidence: 95%

See 2 more Smart Citations

Convergence Angles of Clinical Tooth Preparations for Metal Ceramic Restorations Among Dental Students and General Practitioners

Hinnara¹,

Barngkgei

Nassar³

2017

Avicenna J Dent Res

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Background: Numerous studies showed that the convergence angle (CA) of prepared teeth for fixed prosthodontics in the clinical practice is greater than the recommended values. Objectives: This cross-sectional study aimed to compare the total occlusal convergence (TOC) angles of metal ceramic fixed prosthodontics among dental students [final-year undergraduate (UG) and Master Prosthodontics (MS) students] and general practitioners (GP) in their private clinics with the recommended value (≤ 12 degrees). Methods: The buccolingual (BL) and mesiodistal (MD) TOC of 114, 90, and 111 stone dies referred to UG, MS, and GP, respectively, were measured. These dies included incisors, premolars, and molars. One sample Wilcoxon signed rank test, Mann-Whitney U test, Kruskal-Wallis, and Fisher exact test were used for statistical analysis. Results: Mean values of TOC for UG were 27.8 degrees BL and 20.9 degrees MD, whereas they were 30.6 degrees BL and 18.2 degrees MD for MS. GP had TOC of 35.5 degrees BL and 24 degrees MD. GP had significantly higher TOC values than the other groups (0.001

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Section: Discussioncontrasting

confidence: 95%

Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 95%

See 1 more Smart Citation

Convergence Angles of Clinical Tooth Preparations for Metal Ceramic Restorations Among Dental Students and General Practitioners

Hinnara¹,

Barngkgei

Nassar³

2017

Avicenna J Dent Res

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“…Additionally, a drastic marginal gap increase was noted between the 24° and 28° TOC . However, recent reports by Tiu et al found a mean TOC of 33° with bicuspid all‐ceramic preparations submitted to a commercial dental laboratory.…”

Section: Discussionmentioning

confidence: 90%

Bicuspid Axial Wall Height Effect on CAD/CAM Crown Fracture Mode on Preparations Containing Advanced Total Occlusal Convergence

Miller¹,

DuVall

Brewster³

et al. 2018

Journal of Prosthodontics

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“…Regardless of the margin configuration, a sufficient bulk of material is required to prevent material fracture and allow adequate space for restorative materials. 17,30,31 Some evidence suggests a knife-edge or feather-edge margin may be associated with less gingival recession, but more bleeding on probing. 32,33 The knife-edge preparation was frequently correlated with minimally invasive crown preparations.…”

Section: Discussionmentioning

confidence: 99%

Preparation Techniques Used to Make Single‐Unit Crowns: Findings from The National Dental Practice‐Based Research Network

Minyé¹,

Gilbert

Litaker

et al. 2018

Journal of Prosthodontics

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Purpose: To: (1) determine which preparation techniques clinicians use in routine clinical practice for single-unit crown restorations; (2) test whether certain practice, dentist, and patient characteristics are significantly associated with these techniques. Methods: Dentists in the National Dental Practice-Based Research Network participated in a questionnaire regarding preparation techniques, dental equipment used for single-unit crown preparations, scheduled chair time, occlusal clearance determination, location of finish lines, magnification during preparation, supplemental lighting, shade selection, use of intraoral photographs, and trimming dies. Survey responses were compared by dentist and practice characteristics using ANOVA. Results: Of the 2132 eligible dentists, 1,777 (83%) responded to the survey. The top two margin configuration choices for single-unit crown preparation for posterior crowns were chamfer/heavy chamfer (65%) and shoulder (23%). For anterior crowns, the most prevalent choices were the chamfer (54%) and the shoulder (37%) configurations. Regarding shade selection, a combination of dentist, assistant, and patient input was used to select anterior shades 59% of the time. Photographs are used to communicate shade selection with the laboratory in about half of esthetically demanding cases. The ideal finish line was located at the crest of gingival tissue for 49% of respondents; 29% preferred 1 mm below the crest; and 22% preferred the finish line above the crest of tissue. Average chair time scheduled for a crown preparation appointment was 76 ± 21 minutes. Practice and dentist characteristics were significantly associated with margin choice including practice type (p < 0.0001), region (p < 0.0001), and years since graduation (p < 0.0001). Conclusions: Network dentists prefer chamfer/heavy chamfer margin designs, followed by shoulder preparations. These choices were related to practice and dentist characteristics.

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Reporting numeric values of complete crowns. Part 1: Clinical preparation parameters

Cited by 23 publications

References 23 publications

Convergence Angles of Clinical Tooth Preparations for Metal Ceramic Restorations Among Dental Students and General Practitioners

Convergence Angles of Clinical Tooth Preparations for Metal Ceramic Restorations Among Dental Students and General Practitioners

Bicuspid Axial Wall Height Effect on CAD/CAM Crown Fracture Mode on Preparations Containing Advanced Total Occlusal Convergence

Preparation Techniques Used to Make Single‐Unit Crowns: Findings from The National Dental Practice‐Based Research Network

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