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Research paper thumbnail of Assessment of Real-Time Operative Torque during Nickel–Titanium Instrumentation with Different Lubricants

Applied Sciences

The aim of the present study is twofold: to assess ex vivo the role of different lubricants on re... more The aim of the present study is twofold: to assess ex vivo the role of different lubricants on real-time torque generated during intracanal instrumentation and to check whether two different kinds of torque parameters, operative torque (OT) and average peak torque (APT), could produce similar results. Forty extracted single-rooted teeth were selected for the present study and divided into four equal groups (n = 10): Group A, NaCl 0.2%; Group B, NaOCl 5%; Group C, ethylenediaminetetraacetate (EDTA), and Group D, EDTA and hydrogen peroxide. Afterwards, Edge Taper F2 (Edge Endo, Albuquerque, New Mexico) were rotated clockwise at 300 rpm with 3 Ncm maximum torque by an endodontic torque recording motor. In each sample, mean OT and mean APT were recorded and statistically analyzed with one-way ANOVA and a post hoc Bonferroni between groups (p < 0.05). EDTA (12.11 ± 4.45 Ncm) showed statistically significant (p < 0.05) lower values compared with the other tested irrigant for both pa...

Research paper thumbnail of Investigation on Nickel-Titanium Rotary Instruments in Endodontics

World Journal of Dentistry

Research paper thumbnail of Centering Ability of a New Nickel–Titanium Rotary Instruments with a Peculiar Flat-side Design: An In Vitro Study

The Journal of Contemporary Dental Practice

Research paper thumbnail of Correlation between Peri-Implant Marginal Bone Loss Progression and Peri-Implant Sulcular Fluid Levels of Metalloproteinase-8

Journal of Personalized Medicine, 2022

Objectives: The aim of this retrospective study was to analyze peri-implant marginal bone loss le... more Objectives: The aim of this retrospective study was to analyze peri-implant marginal bone loss levels/rates and peri-implant sulcular fluid levels/rates of metalloproteinase-8 in three timeframes (6 months post-surgery—restoration delivery (T0)—and 6 (T6) and 24 (T24)-months post-loading) and to evaluate if there is a correlation between peri-implant sulcular fluid levels of metalloproteinase-8 and peri-implant marginal bone loss progression. Materials and Methods: Two cohorts of patients undergoing implant surgery between January 2017 and January 2019 were selected in this retrospective study. A total of 39 patients received 39 implants with a laser-microtextured collar surface, and 41 subjects received 41 implants with a machined/smooth surface. For each patient, periapical radiographs and a software package were used to measure marginal bone loss rates. Implant fluid samples were analyzed by an enzyme-linked immunosorbent assay (ELISA) test. The modified plaque index, probing dep...

Research paper thumbnail of Influence of different cross-section on cyclic fatigue resistance of two nickel–titanium rotary instruments with same heat treatment: An in vitro study

Saudi Endodontic Journal, 2020

Introduction: The aim of this study was to investigate the role of the cross-sectional design sur... more Introduction: The aim of this study was to investigate the role of the cross-sectional design surface in improving the cyclic fatigue resistance by comparing two nickel–titanium (NiTi) rotary instruments with the same heat-treatment and grinding procedure. Materials and Methods: A total of 40 new NiTi instruments (20 S-One 25.06 taper and 20 AF Blue S4 25.06 taper) were tested in the present study. Both instruments were rotated at 300 rpm and with a torque setting of 2 Ncm) using an endodontic motor in the same artificial canal (90° angle of curvature and 3 mm radius). A Student's t-test was performed to determinate the differences in terms of time to fracture (TtF) and the length of the fractured portion between the two different instruments. Significance was set at P < 0.05. Results: The differences in terms of TtF for cyclic fatigue resistance between the two files were statistically significant (P < 0.05). In terms of fractured length, not statistically significant dif...

Research paper thumbnail of Heat-treated Ni-Ti Rotary Instruments Influencing the Success of Endodontic Treatments

World Journal of Dentistry, 2020

Dental pulp could be compromised by mechanical, thermal, or chemical damages developed while perf... more Dental pulp could be compromised by mechanical, thermal, or chemical damages developed while performing restoration or by pathogenic bacteria that reach the pulpal tissues,1 penetrating from extensive primary decay, from a secondary decay that developed underneath a previous restoration, and for many other causes. When the health of dental pulp is compromised, and no longer recoverable, it is necessary to practice root canal therapy before proceeding with any kind of rehabilitation which could be conservative or prosthetic. However, function, esthetic, and comfort can be achieved by eliminating or significantly reducing pathogenic bacteria, starting from a correct root canal instrumentation and irrigation, and preventing recontamination by a complete sealing of the canal system which could be guaranteed by effective isolation from oral cavity obtained by a congruous restauration.2 A significant contribution to the reduction of pathogenic bacteria from the main canals of a contaminat...

Research paper thumbnail of Nickel–Titanium Rotary Instruments: An In Vitro Comparison (Torsional Resistance of Two Heat-treated Reciprocating Files)

The Journal of Contemporary Dental Practice, 2021

Research paper thumbnail of The Incidence and Intensity of Postendodontic Pain and Flareup in Single and Multiple Visit Root Canal Treatments: A Systematic Review and Meta-Analysis

Applied Sciences, 2021

To assess the incidence and intensity of postendodontic pain and flareup in single and multiple v... more To assess the incidence and intensity of postendodontic pain and flareup in single and multiple visit root canal treatment (RCT) and determine if the difference between the two is significant, a search of PubMed, Medline, Embase, Cochrane, Scopus and Web of science was conducted. The grey literature was searched using Google Scholar and Saudi digital library. Randomised controlled trials evaluating the incidence and intensity of postendodontic pain and flareup published in English from 1 January 2000 to 15 April 2020 were searched. The PRISMA protocol was followed to select the articles. A random effects model was used for the meta-analysis of the data in the included studies. Twenty-one articles were included in the review. Three compared both the incidence and the intensity, while the rest compared either one of the parameters. Most studies used both hand-driven and rotary instruments and irrigated with sodium hypochlorite. Twelve studies used an intracanal medicament. Although in...

Research paper thumbnail of Sulcus fluid volume, IL‐6, and Il‐1b concentrations in periodontal and peri‐implant tissues comparing machined and laser‐microtextured collar/abutment surfaces during 12 weeks of healing: A split‐mouth RCT

Clinical Oral Implants Research, 2021

OBJECTIVES to compare gingival tissue healing at surgically manipulated periodontal sites and at ... more OBJECTIVES to compare gingival tissue healing at surgically manipulated periodontal sites and at sites receiving implants and healing abutments with machined (MS) vs. laser-microtextured (LMS) surface placed with one-stage protocol . MATERIAL AND METHODS Twenty-four non smoking patients each received two implants with one-stage protocol in a split mouth design on the same jaw. In each patient, one implant with a MS collar and one immediate healing abutment with a MS, and one implant with a LMS collar and one immediate healing abutment with a LMS were used. Soft tissues healing at surgically manipulated periodontal tissues (T+) and at non-surgically manipulated periodontal tissues (T-) at MS implant sites and at LMS implant sites were compared by means of clinical and biochemical parameters at baseline and at 1-2-3-4-6-8 and 12 weeks. RESULTS PD and BoP mean values were statistically higher in MS than LMS implant sites (p<0.05) . During early healing phase (1-4 weeks), MS and LMS peri-implant tissues and periodontal tissues at T(+) showed no statistically significant difference in crevicular fluid volume changes (p>0.05). Between 6 and 12 weeks, compared to T(+), no statistical significant difference in crevicular fluid volume and IL-6 and IL-1β concentrations were noted in LMS implant sites (p>0.05), while statistically significantly higher mean values were noted in MS implant sites (p<0.05). CONCLUSIONS Compared T(+) and T(-), both MS and LMS implant sites presented a higher pro-inflammatory state in the early phase after surgery (1-4 weeks). At 12 weeks only MS implant sites kept a higher pro-inflammatory state state, while at LMS implant sites it becomes similar to T(+) and T(-).

Research paper thumbnail of An Update of the Possible Applications of Magnetic Resonance Imaging (MRI) in Dentistry: A Literature Review

Journal of Imaging, 2021

This narrative review aims to evaluate the current evidence for the application of magnetic reson... more This narrative review aims to evaluate the current evidence for the application of magnetic resonance imaging (MRI), a radiation-free diagnostic exam, in some fields of dentistry. Background: Radiographic imaging plays a significant role in current first and second level dental diagnostics and treatment planning. However, the main disadvantage is the high exposure to ionizing radiation for patients. Methods: A search for articles on dental MRI was performed using the PubMed electronic database, and 37 studies were included. Only some articles about endodontics, conservative dentistry, implantology, and oral and craniofacial surgery that best represented the aim of this study were selected. Results: All the included articles showed that MRI can obtain well-defined images, which can be applied in operative dentistry. Conclusions: This review highlights the potential of MRI for diagnosis in dental clinical practice, without the risk of biological damage from continuous ionizing radiati...

Research paper thumbnail of Mechanism of Fracture of Nickel–Titanium Rotary Instruments

World Journal of Dentistry, 2020

Research paper thumbnail of Torque Range, a New Parameter to Evaluate New and Used Instrument Safety

Applied Sciences, 2020

The aim of the present study is to evaluate operative torque, torque at failure and the differenc... more The aim of the present study is to evaluate operative torque, torque at failure and the difference between these two values—the “torque range”—of two different NiTi files. We also sought to evaluate and compare these parameters for new and used files. Forty S-One 20.06 and forty M-Two 20.06 were tested, divided in four equal groups (n = 10) for each brand. Ten instruments from each brand performed three root canal treatments each on standardized extracted single-rooted teeth. Afterwards, each group was subjected to the following two tests: operative torque and torsional resistance. Mean values for all the tested groups were calculated. The results for new instruments showed that S-One developed significantly higher operative torque, but higher torsional resistance. The results for used instruments showed that the S-One 20.06 developed less operative torque and higher mean torsional resistance value compared to the M-Two. Moreover, the percentage reduction of both values was signific...

Research paper thumbnail of Torsional Resistance of Two New Heat Treated Nickel Titanium Rotary Instruments: An in Vitro Evaluation

Pesquisa Brasileira em Odontopediatria e Clínica Integrada, 2020

Research paper thumbnail of Fatigue Resistance of Two Nickel–Titanium Rotary Instruments before and after Ex Vivo Root Canal Treatment

The Journal of Contemporary Dental Practice, 2020

Research paper thumbnail of Evaluating the Outcome of Endodontic Treatment

World Journal of Dentistry, 2020

Research paper thumbnail of The Three-dimensional Endodontic Approach: A Novel Strategy to Deal with the Root Canal System

World Journal of Dentistry, 2020

Research paper thumbnail of Assessment of Real-Time Operative Torque during Nickel–Titanium Instrumentation with Different Lubricants

Applied Sciences

The aim of the present study is twofold: to assess ex vivo the role of different lubricants on re... more The aim of the present study is twofold: to assess ex vivo the role of different lubricants on real-time torque generated during intracanal instrumentation and to check whether two different kinds of torque parameters, operative torque (OT) and average peak torque (APT), could produce similar results. Forty extracted single-rooted teeth were selected for the present study and divided into four equal groups (n = 10): Group A, NaCl 0.2%; Group B, NaOCl 5%; Group C, ethylenediaminetetraacetate (EDTA), and Group D, EDTA and hydrogen peroxide. Afterwards, Edge Taper F2 (Edge Endo, Albuquerque, New Mexico) were rotated clockwise at 300 rpm with 3 Ncm maximum torque by an endodontic torque recording motor. In each sample, mean OT and mean APT were recorded and statistically analyzed with one-way ANOVA and a post hoc Bonferroni between groups (p < 0.05). EDTA (12.11 ± 4.45 Ncm) showed statistically significant (p < 0.05) lower values compared with the other tested irrigant for both pa...

Research paper thumbnail of Investigation on Nickel-Titanium Rotary Instruments in Endodontics

World Journal of Dentistry

Research paper thumbnail of Centering Ability of a New Nickel–Titanium Rotary Instruments with a Peculiar Flat-side Design: An In Vitro Study

The Journal of Contemporary Dental Practice

Research paper thumbnail of Correlation between Peri-Implant Marginal Bone Loss Progression and Peri-Implant Sulcular Fluid Levels of Metalloproteinase-8

Journal of Personalized Medicine, 2022

Objectives: The aim of this retrospective study was to analyze peri-implant marginal bone loss le... more Objectives: The aim of this retrospective study was to analyze peri-implant marginal bone loss levels/rates and peri-implant sulcular fluid levels/rates of metalloproteinase-8 in three timeframes (6 months post-surgery—restoration delivery (T0)—and 6 (T6) and 24 (T24)-months post-loading) and to evaluate if there is a correlation between peri-implant sulcular fluid levels of metalloproteinase-8 and peri-implant marginal bone loss progression. Materials and Methods: Two cohorts of patients undergoing implant surgery between January 2017 and January 2019 were selected in this retrospective study. A total of 39 patients received 39 implants with a laser-microtextured collar surface, and 41 subjects received 41 implants with a machined/smooth surface. For each patient, periapical radiographs and a software package were used to measure marginal bone loss rates. Implant fluid samples were analyzed by an enzyme-linked immunosorbent assay (ELISA) test. The modified plaque index, probing dep...

Research paper thumbnail of Influence of different cross-section on cyclic fatigue resistance of two nickel–titanium rotary instruments with same heat treatment: An in vitro study

Saudi Endodontic Journal, 2020

Introduction: The aim of this study was to investigate the role of the cross-sectional design sur... more Introduction: The aim of this study was to investigate the role of the cross-sectional design surface in improving the cyclic fatigue resistance by comparing two nickel–titanium (NiTi) rotary instruments with the same heat-treatment and grinding procedure. Materials and Methods: A total of 40 new NiTi instruments (20 S-One 25.06 taper and 20 AF Blue S4 25.06 taper) were tested in the present study. Both instruments were rotated at 300 rpm and with a torque setting of 2 Ncm) using an endodontic motor in the same artificial canal (90° angle of curvature and 3 mm radius). A Student's t-test was performed to determinate the differences in terms of time to fracture (TtF) and the length of the fractured portion between the two different instruments. Significance was set at P < 0.05. Results: The differences in terms of TtF for cyclic fatigue resistance between the two files were statistically significant (P < 0.05). In terms of fractured length, not statistically significant dif...

Research paper thumbnail of Heat-treated Ni-Ti Rotary Instruments Influencing the Success of Endodontic Treatments

World Journal of Dentistry, 2020

Dental pulp could be compromised by mechanical, thermal, or chemical damages developed while perf... more Dental pulp could be compromised by mechanical, thermal, or chemical damages developed while performing restoration or by pathogenic bacteria that reach the pulpal tissues,1 penetrating from extensive primary decay, from a secondary decay that developed underneath a previous restoration, and for many other causes. When the health of dental pulp is compromised, and no longer recoverable, it is necessary to practice root canal therapy before proceeding with any kind of rehabilitation which could be conservative or prosthetic. However, function, esthetic, and comfort can be achieved by eliminating or significantly reducing pathogenic bacteria, starting from a correct root canal instrumentation and irrigation, and preventing recontamination by a complete sealing of the canal system which could be guaranteed by effective isolation from oral cavity obtained by a congruous restauration.2 A significant contribution to the reduction of pathogenic bacteria from the main canals of a contaminat...

Research paper thumbnail of Nickel–Titanium Rotary Instruments: An In Vitro Comparison (Torsional Resistance of Two Heat-treated Reciprocating Files)

The Journal of Contemporary Dental Practice, 2021

Research paper thumbnail of The Incidence and Intensity of Postendodontic Pain and Flareup in Single and Multiple Visit Root Canal Treatments: A Systematic Review and Meta-Analysis

Applied Sciences, 2021

To assess the incidence and intensity of postendodontic pain and flareup in single and multiple v... more To assess the incidence and intensity of postendodontic pain and flareup in single and multiple visit root canal treatment (RCT) and determine if the difference between the two is significant, a search of PubMed, Medline, Embase, Cochrane, Scopus and Web of science was conducted. The grey literature was searched using Google Scholar and Saudi digital library. Randomised controlled trials evaluating the incidence and intensity of postendodontic pain and flareup published in English from 1 January 2000 to 15 April 2020 were searched. The PRISMA protocol was followed to select the articles. A random effects model was used for the meta-analysis of the data in the included studies. Twenty-one articles were included in the review. Three compared both the incidence and the intensity, while the rest compared either one of the parameters. Most studies used both hand-driven and rotary instruments and irrigated with sodium hypochlorite. Twelve studies used an intracanal medicament. Although in...

Research paper thumbnail of Sulcus fluid volume, IL‐6, and Il‐1b concentrations in periodontal and peri‐implant tissues comparing machined and laser‐microtextured collar/abutment surfaces during 12 weeks of healing: A split‐mouth RCT

Clinical Oral Implants Research, 2021

OBJECTIVES to compare gingival tissue healing at surgically manipulated periodontal sites and at ... more OBJECTIVES to compare gingival tissue healing at surgically manipulated periodontal sites and at sites receiving implants and healing abutments with machined (MS) vs. laser-microtextured (LMS) surface placed with one-stage protocol . MATERIAL AND METHODS Twenty-four non smoking patients each received two implants with one-stage protocol in a split mouth design on the same jaw. In each patient, one implant with a MS collar and one immediate healing abutment with a MS, and one implant with a LMS collar and one immediate healing abutment with a LMS were used. Soft tissues healing at surgically manipulated periodontal tissues (T+) and at non-surgically manipulated periodontal tissues (T-) at MS implant sites and at LMS implant sites were compared by means of clinical and biochemical parameters at baseline and at 1-2-3-4-6-8 and 12 weeks. RESULTS PD and BoP mean values were statistically higher in MS than LMS implant sites (p<0.05) . During early healing phase (1-4 weeks), MS and LMS peri-implant tissues and periodontal tissues at T(+) showed no statistically significant difference in crevicular fluid volume changes (p>0.05). Between 6 and 12 weeks, compared to T(+), no statistical significant difference in crevicular fluid volume and IL-6 and IL-1β concentrations were noted in LMS implant sites (p>0.05), while statistically significantly higher mean values were noted in MS implant sites (p<0.05). CONCLUSIONS Compared T(+) and T(-), both MS and LMS implant sites presented a higher pro-inflammatory state in the early phase after surgery (1-4 weeks). At 12 weeks only MS implant sites kept a higher pro-inflammatory state state, while at LMS implant sites it becomes similar to T(+) and T(-).

Research paper thumbnail of An Update of the Possible Applications of Magnetic Resonance Imaging (MRI) in Dentistry: A Literature Review

Journal of Imaging, 2021

This narrative review aims to evaluate the current evidence for the application of magnetic reson... more This narrative review aims to evaluate the current evidence for the application of magnetic resonance imaging (MRI), a radiation-free diagnostic exam, in some fields of dentistry. Background: Radiographic imaging plays a significant role in current first and second level dental diagnostics and treatment planning. However, the main disadvantage is the high exposure to ionizing radiation for patients. Methods: A search for articles on dental MRI was performed using the PubMed electronic database, and 37 studies were included. Only some articles about endodontics, conservative dentistry, implantology, and oral and craniofacial surgery that best represented the aim of this study were selected. Results: All the included articles showed that MRI can obtain well-defined images, which can be applied in operative dentistry. Conclusions: This review highlights the potential of MRI for diagnosis in dental clinical practice, without the risk of biological damage from continuous ionizing radiati...

Research paper thumbnail of Mechanism of Fracture of Nickel–Titanium Rotary Instruments

World Journal of Dentistry, 2020

Research paper thumbnail of Torque Range, a New Parameter to Evaluate New and Used Instrument Safety

Applied Sciences, 2020

The aim of the present study is to evaluate operative torque, torque at failure and the differenc... more The aim of the present study is to evaluate operative torque, torque at failure and the difference between these two values—the “torque range”—of two different NiTi files. We also sought to evaluate and compare these parameters for new and used files. Forty S-One 20.06 and forty M-Two 20.06 were tested, divided in four equal groups (n = 10) for each brand. Ten instruments from each brand performed three root canal treatments each on standardized extracted single-rooted teeth. Afterwards, each group was subjected to the following two tests: operative torque and torsional resistance. Mean values for all the tested groups were calculated. The results for new instruments showed that S-One developed significantly higher operative torque, but higher torsional resistance. The results for used instruments showed that the S-One 20.06 developed less operative torque and higher mean torsional resistance value compared to the M-Two. Moreover, the percentage reduction of both values was signific...

Research paper thumbnail of Torsional Resistance of Two New Heat Treated Nickel Titanium Rotary Instruments: An in Vitro Evaluation

Pesquisa Brasileira em Odontopediatria e Clínica Integrada, 2020

Research paper thumbnail of Fatigue Resistance of Two Nickel–Titanium Rotary Instruments before and after Ex Vivo Root Canal Treatment

The Journal of Contemporary Dental Practice, 2020

Research paper thumbnail of Evaluating the Outcome of Endodontic Treatment

World Journal of Dentistry, 2020

Research paper thumbnail of The Three-dimensional Endodontic Approach: A Novel Strategy to Deal with the Root Canal System

World Journal of Dentistry, 2020