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Use of restorations on vertically prepared teeth suitable option to classical horizontal preparations: Study

Written By : Dr. Shravani Dali |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2024-05-15T08:00:50+05:30  |  Updated On 15 May 2024 2:17 PM IST
Use of restorations on vertically prepared teeth suitable option to classical horizontal preparations: Study
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The use of restorations on vertically prepared teeth suitable for classical horizontal preparations suggests a study published in the Journal of Dentistry.

A study was done to evaluate the clinical conditions of single-unit posterior restorations on teeth prepared without a finishing line, after 5.6 years of clinical service. 50 crowns (25 zirconia-based (Zr) and 25 porcelain-fused-to-metal (PFM)) were selected from 34 patients. The restorations were evaluated according to the California Dental Association (CDA) Quality Criteria, and periodontal variables were studied in the abutment teeth compared with the unrestored contralateral teeth. Variables were examined using Mann-Whitney and Pearson´s Chi-Square tests (α = 0.05). The success of the prosthesis was calculated using the Kaplan-Meier test. Results: CDA Quality Criteria was considered satisfactory- excellent in all restorations except for one of them, due to chipping on a PFM crown. At, 66 months, the success rates for PFM and Zr crowns were 85.7% and 100%, respectively. The plaque index (PI) showed that the restored abutment teeth accumulated significantly less plaque than the control teeth, but the gingival index (GI) was statistically higher in the abutment teeth. In 80% of cases, the probing depth (PB) was ≤ 3mm. In addition, in 21% of the cases, gingival recession was less than 2mm. The restoration material had a statistically significant effect on GI and PB, with Zr crowns showing less inflammation and fewer deep pockets than PFM restorations. On the contrary, greater gingival recession was found at the margins of the Zr crowns when compared to the PFM. No statistical differences were found between the two materials in the GI. Cemented crowns on vertical preparations show good clinical behavior after 5 years. The periodontal parameters (PI, GI, PD) of the Zr restorations are significantly better than those of PFM, with the exception of gingival recession. The use of restorations on vertically prepared teeth is a suitable alternative to classical horizontal preparations.

Reference:

M Gonzalez-Bonilla, S Berrendero, B Moron-Conejo, F Martinez-Rus, MP Salido, Clinical evaluation of posterior zirconia-based and porcelain-fused-to-metal crowns with a vertical preparation technique: an up to 5-year retrospective cohort study., Journal of Dentistry, 2024, 104953, ISSN 0300-5712, https://doi.org/10.1016/j.jdent.2024.104953. (https://www.sciencedirect.com/science/article/pii/S0300571224001234)

UserestorationsverticallypreparedteethsuitableoptionclassicalhorizontalpreparationsstudyJournal of Dentistry
Source : Journal of Dentistry
Dr. Shravani Dali
Dr. Shravani Dali

    Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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