Objectives: Due to the high chipping rates observed in veneered zirconia ceramic restorations, the use of monolithic zirconia restorations has been recommended. This study tried to compare veneered and monolithic zirconia fixed dental prostheses (FDPs) with respect to the amount of damage induced by endodontic access preparation.
Method And Materials: Monolithic and ceramic veneered (n = 10) three-unit restorations (retainers: first premolar and first molar; pontic: second premolar) were subject to endodontic access cavity preparation in both retainers using a diamond rotary instrument under continuous water cooling. The number of chipping fractures and microfractures detected using the fluorescent penetrant method were recorded. Statistical analysis was based on Wilcoxon rank sum tests with Bonferroni correction (level of significance α = .05).
Results: Only one microfracture could be identified in the group of monolithic FDPs while a maximum of seven microfractures and three chipping fractures per retainer crown were recorded in the group of veneered restorations. At the premolar site, the veneered restorations showed significantly more microfractures (P = .0055) and chipping fractures (P = .0008). At the molar site, no significant difference with respect to microfractures could be detected (P = .0767), while significantly more chipping fractures occurred in the veneered samples (P = .0293).
Conclusion: Monolithic zirconia restorations seem to be less susceptible to damage when endodontic access cavities have to be prepared as compared to veneered zirconia reconstructions. However, no conclusions can be drawn on the long-term performance of a specific restoration based on this study.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3290/j.qi.a36567 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Prospective Study of a Custom-Made Eco-Friendly Thyroid Shield: A Breakthrough in Radiation Protection.
Cureus
December 2024
Department of Oral Medicine and Radiology, Drs Sudha and Nageswara Rao Siddhartha Institute of Dental Sciences, Vijayawada, IND.
Background The thyroid gland is the most susceptible organ to radiation during the exposure of teeth because the thyroid area appears to be within the primary beam, and the dose levels are relatively high even after using collimation. This study aims to develop an eco-friendly thyroid shield by reusing lead foils from intra-oral periapical radiographic films and evaluate its effectiveness in intraoral radiography. Methods A total of 16 patients undergoing endodontic procedures who gave written consent to participate in the study were included and divided into four categories: anterior, canine, premolar, and molar.
View Article and Find Full Text PDFDetrimental effects of chronic sugar-sweetened carbonated soft drink consumption on inflammatory response and the size of apical periodontitis: An animal-based study.
Int Endod J
January 2025
Department of Integrated Clinical Procedures, School of Dentistry, Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil.
Aim: This study aimed to evaluate the effects of chronic consumption of two sugar-sweetened carbonated soft drinks - one containing caffeine (Coca-Cola®) and one without (Sprite®) - on the progression of periapical lesions and the levels of pro-inflammatory cytokines in rats.
Methodology: Twelve Wistar rats were divided into three groups (n = 4): Control group, Coca-Cola group and Sprite group. The rats in Coca-Cola and Sprite groups were given ad libitum access to their respective soft drinks for 3 months, while the Control group received filtered water.
Evaluation of the effect of different irrigation solutions used in regenerative endodontic treatment of necrotic molar teeth with open apex on postoperative pain- randomized clinical trial.
Clin Oral Investig
January 2025
Department of Pedodontics, Faculty of Dentistry, Erciyes University, 38039, Kayseri, Türkiye.
Objectives: This study evaluates the effect of different irrigation solutions for postoperative pain in the regenerative endodontic treatments (RET) of necrotic teeth with open apex.
Materials And Methods: This study included necrotic, deeply carious lower molars of 42 patients. Access cavities of the teeth were opened and working lengths were measured at the first visit.
Minimally invasive endodontic treatment through the labial/buccal cervical approach - protocol and case series.
J Endod
January 2025
Department of Endodontics, Qingdao Stomatological Hospital Affiliated to Qingdao University, Qingdao, Shandong province, China. Electronic address:
Introduction: Traditional access cavity preparation involves removing the roof of the pulp chamber and smoothing the dentin bulges at the root canal orifice, thereby creating straight-line access. However, this may damage more healthy dental tissue and reduce the tooth's fracture resistance. This case series presents a novel minimally invasive endodontic protocol for one maxillary canine and four mandibular premolars, which required root canal therapy due to labial/buccal cervical decay that caused pulpitis or periapical periodontitis.
View Article and Find Full Text PDFTargeted Endodontic Access Preparation: Comparing Grid-Guided and Freehand CBCT Techniques.
J Endod
January 2025
Department of Endodontics, Texas A&M College of Dentistry, 3302 Gaston Ave, Dallas, TX 75246. Electronic address:
Introduction: Endodontic access is often one of the most challenging aspects of treatment, particularly in cases involving locating calcified or missed canals, or when performing selective retreatments of a targeted root. Therefore, the purpose of this study is to compare the accuracy of targeted accesses made using prefabricated grid to those made using freehand techniques with CBCT measurements METHODS: Twenty extracted maxillary molars were mounted into the TrueJaw maxillary model (PlanB Dental, CA). To replicate a clinical scenario where the tooth is extensively restored or has a calcified pulp chamber, the build-up material was intentionally placed directly over the canal orifices.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!