Radiographic technical quality of root canal treatment performed by a new rotary single-file system

Colombo, Marco; Bassi, Cristina; Beltrami, Riccardo; Vigorelli, Paolo; Spinelli, Antonello E.; Cavada, Andrea; Dagna, Alberto; Chiesa, Marco; Poggio, Claudio

doi:10.11138/ads/2017.8.1.018

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…It is later followed by adequate sealing of canal spaces and restoration of root treated teeth to complete the treatment. 8,10,21 Different types of antimicrobials either single or in combination have been used in root canal disinfection. These antimicrobials act by promoting slow destruction of the biofilm structure by destroying persistent cell or quorum sensing signals, which then allows it to diffuse into the biofilm structure, signaling destruction of both the matrix and resident bacteria in the structure.…”

Section: Discussionmentioning

confidence: 99%

“…Hence, the penetrating ability of the traditional antimicrobial agents needs to be higher to reduce the remaining bacteria inside the dentinal tubules. 10 Calcium hydroxide (Ca(OH) 2 ) and chlorhexidine (CHX) gluconate are commonly used as intracanal medicaments in endodontic therapy. The mode of action of Ca(OH) 2 allows it to be a physical barrier, disturbing remaining nutrient resources for bacteria, 8 and most importantly a high pH of 12.5 causes lysis of bacterial cell membrane and proteins.…”

Section: Introductionmentioning

confidence: 99%

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Antibacterial Efficacy of Graphene Nanoparticles against Enterococcus faecalis: In Vitro Study

Sultan,

Sidhu,

Rehman

et al. 2024

Eur J Dent

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Objective(s) This study compared the antimicrobial efficacy of nanographene (NG) particles with chlorhexidine (CHX) and calcium hydroxide (Ca(OH)2) against Enterococcus faecalis. Materials and Methods Forty extracted human mandibular premolar teeth were cleaned using a scaler, and the middle-third of the root (6 mm) was decoronated using a rotary diamond disk. The inner diameter of the teeth was made consistent using Gates Glidden Drills #3, treated with ethylene diamine tetra-acetic acid and sodium hypochlorite before sterilization. The samples were then contaminated with E. faecalis grown in Tryptic soy broth for 21 days. Tooth samples were then randomly divided into four groups: Group I (Control), untreated saline; Group II, Ca(OH)2; Group III, CHX; and Group IV, NG. The assessment of bacterial growth was carried out by harvesting dentin chips at the end of 1, 3, and 7 days. The colonies were physically counted and tabulated after 24 hours from seeding. Statistical analysis of the collected data was performed with analysis of variance and Tukey's post hoc test using SPSS Version 20.0. Results The contaminated dentine blocks irrigated with NG (0.5 µg) and CHX (0 ± 0; p < 0.001) had no growth of E. faecalis colonies compared to blocks of Ca(OH)2 (10 ± 21) and saline (927 ± 455). All concentrations of NG (0.5 and 1.0 µg) showed effectiveness higher (p < 0.001) than 2% CHX when measured by the zone of inhibition against E. faecalis. Conclusion It may be concluded that NG is effective against growth of E. faecalis and may be used as a promising antimicrobial agent during root canal treatment. However, further studies should be done to investigate the effect of NG against other dental pathogens.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Antibacterial Efficacy of Graphene Nanoparticles against Enterococcus faecalis: In Vitro Study

Sultan,

Sidhu,

Rehman

et al. 2024

Eur J Dent

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“…Post success was defined according to the following criteria and as previously [25,30] (see Table 1): 1) between 3 and 5 mm gutta percha remaining; 2) absence of a gap between the most apical part of the post and the most coronal part of the gutta percha or presence of a small gap of up to 1 mm; 3) a post width of no more than one-third to one-half the root width; and 4) a crown-to-root ratio of one-half, two-thirds, 1/1. Each quality item was given a score of 0, 1, or 2 (Table 1) to generate a total score out of 8, which was then assigned a letter corresponding to the student's grade according to the percentage score, with F denoting a "fail" (A 90-100%, B 80-89%, C 70-79%, D 60-69%, F <60%).…”

Section: Methodsmentioning

confidence: 99%

Quality of post and core placement by final year undergraduate dental students

Baik

2023

PLoS ONE

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The success of endodontic restoration of badly compromised teeth depends on the quality of post and core placement and the extra-coronal restoration. Ensuring that students place posts to acceptable quality standards is therefore essential. The aim of this study was to radiographically evaluate post placement by final year undergraduate dental students and to identify any predictors of performance. Two hundred retrospectively and randomly selected posts placed by sixth year students were evaluated radiographically. Data on student gender; number and quality of radiographs; periapical pathology; tooth location; root canal treatment quality; amount of remaining gutta percha; gap between gutta percha and post; post-to-root width; crown-to-root ratio; and types of core material and crowns were recorded. Four criteria were used to grade post placement quality: (i) amount of remaining gutta percha; (ii) gap between gutta percha and post; (iii) post width to root ratio; and (iv) crown-to-root ratio. Assessments were scored to produce final grades. Data are presented using descriptive statistics and the chi-squared test was used to investigate whether student gender or tooth location were associated with final grade. Post and core quality was acceptable in most cases (97.5% were graded as adequate), with no differences in quality between male and female students nor according to tooth location (anterior, premolar, and molar). Just over half of radiographs were adequate quality (53.5%), while just under half were assessed as less than adequate (46.5%) due to cone cutting, overlap, shortening or elongation, although this did not affect formal assessment of post quality. General outcomes of post and core placement by undergraduate students were good, with few errors that might affect the prognosis and long-term survival of treated teeth. Providing undergraduate dental students with clear guidelines on when and how to take radiographs throughout the procedure may improve the quality of post and core treatment and reduce the risk of multiple unnecessary radiographic exposures. From the clinical perspective, although dental students generally place high quality posts and cores, it remains important to monitor the quality and performance of post placement as this determines the survival of compromised teeth.

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“…The objective of root canal treatment is to prevent and treat apical periodontitis. 1 The primary etiologic agents of apical periodontitis are microorganisms and their by-products that have invaded the root canal system. 2 Proper chemo-mechanical debridement of the infected root canal followed by obturation and coronal restoration provides a favorable outcome of root canal treatment.…”

Section: Introductionmentioning

confidence: 99%

Management of Bilateral Foreign Objects in Immature Permanent Maxillary Central Incisors: A Case Report

Chourasia

2023

European Journal of General Dentistry

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Traumatic dental injuries are more commonly seen in children and it often results in a complicated crown fracture. This case is unique as foreign objects in the form of hand-sewing needles were accidentally lodged bilaterally in both maxillary central incisors. A 13-year-old patient was referred to the Dental Clinics at the College of Dentistry, Jazan University with a complaint of broken needles in her front teeth and a history of trauma 3 years ago. Although the patient had the habit of using a hand-sewing needle to remove the lodged food particles from the open pulp chamber, she was not able to recollect the incidence of needle separations. Radiographic examination revealed radiopaque objects in the middle third of the right maxillary central incisor (#11) and in the apical third of the left maxillary central incisor (#21). Tooth #11 was clinically diagnosed as pulp necrosis with chronic apical abscess and tooth #21 as pulp necrosis with asymptomatic apical periodontitis. The micro tweezer from the broken instrument removal kit (Zumax Medical Co.,Ltd., Jiangsu, China) was used to retrieve the separated needle pieces under the operating microscope. The open apices were managed by the formation of mineral trioxide aggregate apical plug, and the procedure of root reinforcement was achieved by bonded resin cement and fiber resin posts. Finally, teeth were restored with dual cure core build-up composite material and direct composite veneers. Recommendations are made to treat complicated crown fractures, especially in children on priority to minimize the risk of foreign object impaction.

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Radiographic technical quality of root canal treatment performed by a new rotary single-file system

Abstract: Overall, the technical quality of root canal fillings performed by postgraduates students was acceptable in 60,78% of the cases.

Cited by 6 publications

References 18 publications

Antibacterial Efficacy of Graphene Nanoparticles against Enterococcus faecalis: In Vitro Study

Antibacterial Efficacy of Graphene Nanoparticles against Enterococcus faecalis: In Vitro Study

Quality of post and core placement by final year undergraduate dental students

Management of Bilateral Foreign Objects in Immature Permanent Maxillary Central Incisors: A Case Report

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