Standards of Teeth Preparation for Anterior Reszin Bonded All-Ceramic crowns in Private Dental Practice in South India

Shankar, Sangeetha; Gounder, Revathy

doi:10.5958/0974-360x.2020.00207.3

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sadid-Zadeh et al evaluated 392 STL files of posterior preparations for monolithic zirconia crowns and 82% presented a chamfer finish line [ 19 ]. In a research conducted by Shankar et al, 84% of 100 laboratory casts prepared for anterior all-ceramic crowns presented a radial shoulder finish line [ 20 ].…”

Section: Discussionmentioning

confidence: 99%

Influence of the Operator`s Experience, Working Time, and Working Position on the Quality of the Margin Width: In Vitro Study

Janosi

Cerghizan

Rétyi³

et al. 2023

Medicina

View full text Add to dashboard Cite

Background and Objectives: Appropriate tooth preparation is mandatory to obtain a perfect marginal fit of fixed restorations. The heavy chamfer is the most commonly used finish line, especially for minimally invasive tooth preparation. The aim of the study was to compare the width of the finish line obtained during tooth preparation performed by experienced (university lecturers) and inexperienced persons (dental students) in different working times and positions. Materials and Methods: Forty left upper-second molars were prepared on the simulator by each participant, totalizing 160 prepared teeth. A new round-end tapered diamond was used to obtain the 0.5 mm width of the heavy chamfer. The prepared teeth were photographed using a Canon D5300 camera with a macro lens attached to a tripod. The measurements were made with the Image-Pro Insight software selecting the same eight reference points. From these points, perpendicular lines were drawn above the finish line to the axial walls and the distance between the chamfer’s outer edge and the axial wall’s inner edge was measured. GraphPad Instat and NCSS Dowson Edition software were used. The statistical significance was set at p < 0.05. The mean (M) and standard deviation (SD) were calculated. The used tests: one sample t-test, ANOVA test, and Tukey–Kramer Multiple Comparisons Test. Results: Statistically significant differences were obtained according to the experience of the participant, preparation time, patient’s position, and the chamfer width on the prepared tooth different surfaces. Conclusions: Daytime or weeklong tiredness and patient position do not affect the width of the heavy chamfer prepared by experienced and inexperienced persons. The experience and the operator’s working position influence the width of the prepared finish line.

show abstract

Section: Discussionmentioning

confidence: 99%

Influence of the Operator`s Experience, Working Time, and Working Position on the Quality of the Margin Width: In Vitro Study

Janosi

Cerghizan

Rétyi³

et al. 2023

Medicina

View full text Add to dashboard Cite

show abstract

“…5 There are different types of margin geometry and locations to be followed based on location of teeth, teeth height, crown root ratio, vitality of the teeth, amount of remaining tooth substance and aesthetic requirements. 6 From the past many decades in restorative dentistry, the location of gingival finish line due to its relation to the periodontium is under considerable debate for a best possible consensus. 7 Investigators have repeatedly demonstrated that subgingival margins produced gingival inflammation indicated by an elevated gingival index (GI), increased plaque index (PI), and increased pocket depths (PD).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Marginal Location and Periodontal Health in Crowns and Bridges – A Patient Preference Based Study

Salim¹,

Tirmizi²,

Abbasi³

et al. 2021

J Pak Dent Assoc

View full text Add to dashboard Cite

OBJECTIVE: The objective of this paper was to evaluate the marginal location preference and periodontal health in extra coronal restoration of anterior and posterior teeth. METHODOLOGY: In this prospective case control study, a total of 652 patients who had crown and bridge for not less than six months were included. The gingival margin location preference and reasons behind choosing a particular gingival margin was asked from the patients. Additionally, the teeth with and without restoration were also examined for periodontal health. Split mouth technique was used as unrestored, healthy contra lateral teeth in the same individual served as controls. Descriptive statistics and Chi square test were used for analysis to formulate the results. RESULTS: Ironically, 92% patients were not given a chance by their dentist to give input about margin location preference. The majority of patients preferred equi gingival margin for their anterior crowns 495 (75.92%) and supra gingival margin 586 (89.87%) for their posterior teeth, with esthetics 547 (83.89%) and hygiene 599 (91.87%) respectively being the most common reasons for selecting the particular margin location. The clinical examination revealed that supra gingival and equi gingival margins demonstrated superior gingival health indices as compared to subgingival margins CONCLUSION: This study concluded that the supra gingival and equi gingival margins demonstrated superior gingival health indices as compared to subgingival margin and in order to achieve optimal periodontal health and patient satisfaction the health professionals should wisely consider the margin location and involve the patient in treatment decisions wherever possible. KEY WORDS: Crown and Bridge, Margin location, Patient preference, Periodontal Health.

show abstract

Assessment of the convergence angle of teeth prepared for full crown by preclinical dental students

Al-Sammarraie

Abdulkareem

AlAridi

et al. 2021

RJPT

View full text Add to dashboard Cite

The objective of this study was to measure the buccolingual and mesiodistal convergence angles of six typodont teeth (# 26, 36, 45, 15, 21, and 13), prepared by preclinical dental students at Ajman University, for porcelain fused to a metal full crown and to compare them with the recommended convergence angle (6.5°). Additionally, we sought to compare the angles recorded for the six sets of teeth and relate the results according to the tooth position and surface and to know which one shows the greater tendency of straying from the normal convergence angle. Materials and methods: The angle of convergence of one hundred ninety-eight typodont teeth preparations was measured both buccolingually and mesiodistally by using a Dino-lite pro digital microscope (AM-413ZT Taiwan) with a Dinocapture (2.0 version 1.5.27.A, AnMo Electronics Corporation). All the results were recorded, and the data were analyzed by means of a one-sample t-test and one-way ANOVA. Results: The mean total convergence angle for this study was 11.29°± 6.66° from both surfaces, which is greater than the recommended value of 6.5° and statistically significant (p<0.000). Only 7.07% of teeth met the ideal convergence angle from both surfaces, and the one-sample test showed a statistically significant difference (p<0.057) from the recommended convergence angle, except for the mesiodistal convergence angle of the lower-right second premolar, which revealed no significant difference. The mean convergence angle for the buccolingual surface was 12.42°± 6.16°, which was higher than that of the mesiodistal surface (10.16°± 7°). One-way ANOVA showed a significant difference between all selected teeth (p<0.000), and a paired samples t-test showed a significant difference within two teeth only, the lower-right second premolar and upper-right canine (p<0.000), in which the mesiodistal measurement showed a lower convergence angle than the buccolingual angle. Conclusions: Preclinical students prepared teeth with a convergence angle higher than the recommended convergence angle. However, all the recorded angles were within the range of previous studies. It was concluded that the recommended convergence angle was difficult to achieve in preclinical practice.

show abstract

Standards of Teeth Preparation for Anterior Reszin Bonded All-Ceramic crowns in Private Dental Practice in South India

Cited by 3 publications

References 0 publications

Influence of the Operator`s Experience, Working Time, and Working Position on the Quality of the Margin Width: In Vitro Study

Influence of the Operator`s Experience, Working Time, and Working Position on the Quality of the Margin Width: In Vitro Study

Evaluation of the Marginal Location and Periodontal Health in Crowns and Bridges – A Patient Preference Based Study

Assessment of the convergence angle of teeth prepared for full crown by preclinical dental students

Contact Info

Product

Resources

About