Carlos Eduardo da Silveira Bueno

• DDS, MSc, PhD
• Professor at Faculdade São Leopoldo Mandic

The aim of this study was to evaluate the temperature changes of sodium hypochlorite (NaOCl) after the use of different activation techniques: passive ultrasonic irrigation (PUI), XP-Endo Finisher (XP), and Easy Clean (EC). Thirty patients were selected for this randomized crossover study and each patient received root canal treatment in maxillary...

Objective The purpose of the study was to investigate the cytotoxicity, biocompatibility, and osteogenic effect of EndoSequence BCSealer HiFlow (BCH) and Bio-C Sealer (BCS) in osteosarcoma cells SAOS-2 compared with AH Plus Jet. Materials and Methods For cytotoxicity analysis, the [3-(4,5-dimethyl-thiazole)-2,5-diphenyltetrazolium bromide-MTT; Sigm...

Aim: To evaluate the effect of cetrimide (CT) in combination with photodynamic therapy (PDT) on the reduction of Enterococcus faecalis in the root canal system. Methodology: Forty mesiobuccal canals from extracted human mandibular molars contaminated with the standard strain of Enterococcus faecalis were selected. Instrumentation was performed usin...

This study aimed to investigate the association between maxillary sinus reactions and periradicular pathology in maxillary posterior teeth using cone-beam computed tomography. The maxillary posterior images of 395 teeth were examined for the presence of periradicular pathology, and the maxillary sinus disease. The proximity between the root apex an...

Objetivo: O presente artigo teve como objetivo investigar se a experiência do operador influencia na capacidade de corte, modelagem e tempo de preparo usando os sistemas Reciproc e Reciproc Blue. Métodos: Cento e vinte canais simulados em formato de “S” foram distribuídos aleatoriamente em seis grupos (n=20): RC1 e RC3 (Reciproc e operador inexperi...

É com imenso prazer que apresentamos o Volume IV da série “Contribuições científicas em odontologia: pesquisas, práticas e novos paradigmas”. Este eBook reúne artigos de autoria de estudantes e cirurgiões-dentistas de diversas áreas, todos comprometidos com o avanço do conhecimento científico e o desenvolvimento da odontologia. Ao longo desta colet...

Objective The aim of the present study is to evaluate the occurrence of dentinal defects on the apical surface after rotary instrumentation at different working lengths with Trunatomy Prime system, with or without the use of a glide path file. Methods Twenty human single-rooted mandibular premolars were selected and divided into 2 experimental gro...

Cleaning and shaping the root canal system are essential steps for performing successful endodontic therapy, and are challenging procedures in the apical region. This study aimed to conduct an ex vivo assessment of the debridement ability of the WaveOne Gold (Medium 35/.06) and TruNatomy (Medium 36/.03) systems in the apical third of round root can...

Calcium hydroxide represents the most commonly used intracanal dressing between sessions; however, it may not be effective against all types of microorganisms. Several compounds of plant origin have attracted increasing attention from researchers in recent years. The objective of this study was to evaluate the cytocompatibility and antimicrobial ac...

Knowledge of root canal internal anatomy and its variations is important forproper endodontic treatment. It is therefore necessary to investigate morphological aspects among different dental groups in the same patient to define the best protocol for the case. Aim To evaluate the morphology and symmetry of homologous incisors, premolars and mandibu...

Introduction This study aimed to compare the effectiveness of two endodontic cleaning techniques, passive ultrasonic irrigation (PUI) and the XP-endo Finisher R (XPR) system, in removing residual filling material during endodontic retreatment procedures. Materials and Methods Forty mandibular premolars with oval canals were divided into four group...

This study aimed to evaluate the effect of autoclave sterilization on the integrity and instruments’ fracture number after multiple uses and cyclic fatigue of the original WaveOne Gold (Dentsply Sirona Endodontics) compared to four replica-like instruments (TF4-Gold, Roll-Wave-Gold, W-File, and Micro-Gold). The instruments were analyzed by scanning...

To use scanning electron microscopy and energy dispersive X‐ray spectroscopy to evaluate the metallurgical‐chemical changes of WaveOne Gold (WOG) and R‐Motion (RM), after multiple uses. The instruments were divided into groups ( n = 8): WOG and RM—control groups, new instruments; WOG1 and RM1; WOG2 and RM2; WOG3 and RM3 after instrumentation of 1,...

Objetivo: Avaliar a ocorrência de microfissuras e a rugosidade radicular após ressecção radicular e preparo radicular, além do tempo de corte com diferentes insertos ultrassônicos. Material e Métodos: Os grupos experimentais foram divididos em quatro grupos (n=12 cada): Grupo 1 – W1 e T1F-2; Grupo 2 – Blade-Sonic e P1; Grupo 3 – Surgefix e Surgefix...

Objetivos: O objetivo deste estudo foi utilizar a tomografia computadorizada de feixe cônico para comparar a centralização e o transporte do canal nos sistemas ProTaper Next® (PTN) e TruNatomy® (TN) em canais radiculares mesiais de molares inferiores com curvatura moderada. Material e Métodos: Quatorze raízes mesiais de molares inferiores com curva...

Aims This ex vivo study aimed to assess the dissolving capacity of 2.5% sodium hypochlorite using eight agitation protocols within swine pulp tissue. Subjects and Methods Twelve lower first premolars were prepared and split into the fragments with a groove housing porcine dental pulp. Groups were assigned based on agitation systems: manual, passiv...

Aim: This study aimed to perform an in vitro comparative analysis of the antifungal activity of different calcium silicate-based endodontic sealers against three fungal species. Methods: The antifungal properties of three calcium silicate-based sealers were tested: Bio-C Sealer, Cambiar a Sealer Plus BC, and MTA-Fillapex. Two commonly used sealers...

Differentiating orofacial odontogenic pain/disorders from pain/disorders associated with maxillary sinusitis is important to avoid unnecessary dentalprocedures and to properly refer patients to colleagues/dentists and vice versa. Aim To analyze the association between apical lesions and sinus changes and to evaluate the agreement between the diagn...

This study aimed to evaluate the effect of the number of uses and autoclave sterilization on the cyclic fatigue resistance of four replica-like instruments RC Blue; Only One File Blue; Recip One Blue; and Micro Blue compared to the original system Reciproc Blue (VDW, Munich, Germany). The instruments were analyzed by scanning electron microscope (S...

The aim of this study was to assess by confocal laser microscope the depth of dentinal tubule penetration of two tricalcium silicate‐based sealers promoted by two obturation techniques in curved canals compared with AHPlus. One hundred and twenty canals were divided into six groups ( n = 20): BCSC‐Bio‐C Sealer (BC) and single‐cone technique (SC); B...

This in vitro study compared the antimicrobial efficacy of 2.5% sodium hypochlorite (NaOCl) and 8 µg/mL ozonated water agitated by passive ultrasonic irrigation (PUI) or PUI combined with EndoActivator (EA) against mature multispecies biofilm. One hundred and five oval-shaped mandibular premolars were instrumented, sterilized, and inoculated with E...

The aim of this study was to histologically verify the performance of pulp-derived stem cells used in the pulp–dentin complex regeneration. Maxillary molars of 12 immunosuppressed rats were divided into two groups: the SC (stem cells) group, and the PBS (just standard phosphate-buffered saline) group. After pulpectomy and canal preparation, the tee...

Introduction: The aim of the present study was to investigate ex vivo by confocal laser scanning microscopy (CLSM) the antibacterial effect of photodynamic therapy (PDT) on dentinal tubules in the apical 5 mm of human mandibular premolars contaminated with Enterococcus faecalis. Methods: Thirty-four teeth were standardized to 20 mm and foraminal...

Featured Application Fast and precise endodontic access through ceramic crowns. Abstract This in vitro study evaluated the accuracy of guided endodontics for the removal of intraradicular fiberglass posts from posterior mandibular teeth and the influence of the operator’s experience in this procedure. Forty root-filled mandibular first molars with...

Objective: Reuse of endodontic files remains an open issue in clinical practice. This study was designed to evaluate the fracture strength of WaveOne Gold (Dentsply Maillefer, Ballaigues, Switzerland) and Reciproc Blue (VDW, Munich, Germany) files with successive reuse for root canal shaping in up to three molars. Material and Methods: Prospective...

Objectives: This study aimed to compare the torsional and cyclic fatigue resistance of ProGlider (PG), WaveOne Gold Glider (WGG), and TruNatomy Glider (TNG). Materials and methods: A total of 15 instruments of each glide path system (n = 15) were used for each test. A custom-made device simulating an angle of 90° and a radius of 5 millimeters wa...

Resumo Introdução É importante saber se o hipoclorito de sódio (NaOCl) influencia a resistência à fadiga cíclica das limas de níquel-titânio (NiTi). Objetivo Avaliar a influência de NaOCl 2,5% na resistência à fadiga cíclica de dois sistemas de NiTi. Material e método: 40 instrumentos rotatórios – 20 TruNatomy® (TRU, Dentsply Sirona, Maillefer, Bal...

Purpose: This study compared the accuracy of detection of incomplete vertical root fractures (VRFs) in filled and unfilled teeth on cone-beam computed tomography images with and without a metal artefact reduction (MAR) algorithm. Materials and methods: Forty single-rooted maxillary premolars were selected and, after endodontic instrumentation, w...

Objective This study compared the shaping ability of the Hyflex CM and XP-endo Shaper rotary file systems in curved mesial canals of mandibular molars using micro-computed tomography. Material and Methods Seventeen mesial roots of extracted first mandibular molars with two independent mesial canals were scanned before and after root canal preparati...

Objective The aim of this study was to compare the cyclic fatigue of heat-treated and non-treated instruments. Materials and Methods Twenty instruments with and without heat treatment from Bassi Logic were evaluated ( n = 10). All instruments were subjected to dynamic cyclic fatigue through continuous rotations inside a stainless-steel tube (1.4-mm...

The aim of this study was to evaluate the maximum penetration depth (MPD) and penetration area (PA) of CaOH2 paste agitated by different methods and to measure the pH after performing these methods. Fifty‐five mandibular premolars were divided into control, GL and 4 experimental groups, GEC, GXP, GEDDY and GI (n = 11), where the paste was agitated...

Objective: To compare the prevalence of radix in the mandibular first and second molars using cone beam computed tomography and panoramic radiography. Methods: 850 exams were analyzed, dated from January 2017 to February 2021, in a radiology clinic in the city of Brumado-Ba. Images were acquired using a Cranex 3D CT scanner. Thus, a total of 280 lo...

O objetivo deste estudo foi avaliar, ex vivo, a resistência de união à dentina de dois cimentos endodônticos, sendo um biocerâmico Bio-C Sealer e o outro resinoso AH Plus, através do teste de Push-Out. Todos os dentes foram instrumentados com o sistema Protaper Next até a lima x3, e obturados com cone único. Foram utilizadas 30 amostras de dentes a...

Objective: To investigate the influence of intraradicular moisture conditions on the bond strength of 3 different endodontic cements in the coronal, middle, and apical thirds of the root canal. Materials and Methods: 90 single-rooted teeth were instrumented with a reciprocal R#50 file and randomly divided into 3 experimental groups: Dry group: dry...

Introdução: O tratamento dos canais radiculares está associado a circunstâncias aleatórias imprevistas e indesejadas, geralmente definidas como acidentes de procedimento. Objetivo: O objetivo do presente trabalho foi avaliar a prevalência de acidentes e complicações endodônticas entre os profissionais da Odontologia no estado do Pará. Métodos: Fora...

Objective: Evaluate the cytotoxicity in human osteoblastic cells and antimicrobial activity in different root canal sealers in vitro. Methods: BioRoot RCS, TotalFill BC Sealer, and Bio-C Sealer were used in experimental groups, and AH Plus was used as a control. Human osteoblast-like cells and MTT quantitative colorimetric assay were used to evalua...

Background: To evaluate the antimicrobial activity of the following chelating agents against Enterococcus faecalis using quantitative polymerase chain reaction (qPCR) analysis: 1% peracetic acid (PA), 1% peracetic acid with 0.1% cetrimide (PAC), and 17% ethylenediaminetetraacetic acid (EDTA) activated by passive ultrasonic irrigation (PUI) or with...

Aim: To assess dentin-post bond strength and mode of failure through tensile strength testing of two endodontic post systems: CAD/CAM custom-milled fiber posts vs Splendor SAP. Materials and methods: Thirty extracted single-rooted mandibular premolars were sectioned 2 mm coronal to the cementoenamel junction. Root length was standardized at 15 m...

Objective: to evaluate pain symptoms in patients after endodontic treatment of teeth with pulp necrosis under irrigation with 2.5% or 5.25% sodium hypochlorite. Methods: 50 single-rooted maxillary anterior teeth were divided into two groups (n=25). Group HS2: teeth with pulp necrosis rinsed with 2.5% sodium hypochlorite, Group HS5: teeth with pulp...

Introdução: A ocorrência de dor na Endodontia pode interferir no sucesso do tratamento, podendo ser influenciada pela adequada irrigação ao longo da extensão do canal radicular. Objetivo: O presente trabalho teve como objetivo avaliar a dor pós-operatória por meio de uma Escala Visual Analógica em pacientes submetidos a tratamento endodôntico de de...

Introduction: The aim of this study was to evaluate the AH Plus sealer penetration into dentinal tubules after root canal retreatment followed by two additional cleaning methods. Methods and materials: Thirty-two mandibular premolars with single canal were prepared up to the F4 ProTaper Universal instrument and filled by a single cone technique...

Objective This study compared the ProTaper Next (PTN; Dentsply Sirona, Tulsa, Oklahoma, United States) and HyFlex EDM (HEDM; Coltene/Whaledent AG, Alstätten, Switzerland) systems using micro–computed tomography (CT). Materials and Methods Twenty-one mesial roots classified as Vertucci's type IV from extracted mandibular first molars with curvatures...

Introduction To evaluate the impact of different sodium hypochlorite irrigation protocols on organic tissue dissolution in the periapical region of simulated immature permanent teeth. Methods Eight single-rooted premolars and 48 samples of porcine palatal mucosa were used. Acrylic resin prototypes were constructed, placing the tissue in close cont...

Este livro descreve os conceitos e técnicas mais utilizados no âmbito da Odontologia Regenerativa. Ele foi delineado pensando-se em, didaticamente, separar as principais especialidades da Odontologia em capítulos, dando-se ênfase ao uso da terapia celular em cada uma delas. O livro é rico em esquemas ilustrativos que facilitam o entendimento do le...

Introduction: Successful endodontic treatment requires an effective coronal sealing to prevent the penetration of saliva and microorganisms into the root canal system. We aimed to investigate the sealing capacity of Maxxion R, Intermediate Restorative Material (IRM), Mineral Trioxide Aggregate-like material (Biodentine), White Cimpat, Flow Resin a...

Introdução: O estudo da anatomia da raiz e do canal radicular tem importância relevante para o tratamento endodôntico. Portanto, o conhecimento da morfologia do canal radicular é essencial para se realizar um tratamento que resulte em sucesso. No entanto, o profissional tem limitada informação desses conhecimentos, e um acesso difícil ao local de a...

This study assessed the influence of apical preparation size and final irrigation protocol on the debridement of the apical third of oval root canals of mandibular molars. Seventy-seven distal roots were divided into 7 groups (n = 11): Control: without instrumentation or irrigation; Group 30CI: ProTaper Next (up to size 30; PTN) + conventional irri...

O tratamento do Sistema de Canais Radiculares (SCR) necessita de técnicas mecânicas e químicas para modelar, limpar e obturar a cavidade pulpar. Existem técnicas de irrigação que potencializam a ação das substâncias irrigadoras, assim como permitem um maior alcance à substâncias indesejadas presentes no complexo sistema de canais radiculares, que n...

O sucesso do tratamento endodôntico, depende do conhecimento da anatomia dental interna. O presente artigo relata um caso raro e o tratamento de um primeiro pré-molar superior apresentando três raízes separadas. Paciente do gênero feminino, 32 anos de idade, foi encaminhada para tratamento endodôntico do primeiro pré-molar superior direito. Ao exam...

O presente estudo teve como objetivo avaliar a resistência à fratura por torção de dois sistemas de instrumentação baseados em diferentes cinemáticas de movimento: o movimento alternado do sistema TF Adaptive e o movimento rotatório do sistema Hyflex CM. Para isto foram utilizados 15 instrumentos TF Adaptive de 27 mm de comprimento, com as seguinte...

Objectives: To evaluate the fracture incidence of Reciproc R25 instruments (VDW) used during non-surgical root canal retreatments performed by students in a postgraduate endodontic program. Materials and methods: From the analysis of clinical record cards and periapical radiographs of root canal retreatments performed by postgraduate students us...

The purpose of this ex vivo study was to evaluate the effectiveness of two irrigation techniques against E. Faecalis biofilm: conventional irrigation (CI) and passive ultrasonic irrigation (PUI). Furthermore, to investigate a possible cumulative effect of disinfection in the final irrigation, leaving the hypochlorite in the root canal for 2 or 5 mi...

Analysis of two irrigation methods in root canal disinfection against E. Faecalis biofilm under the influence of the concentration, volumen, and time in contact of the irrigant Análise de dois métodos de irrigação na desinfecção do canal radicular contra biofilme de E. Faecalis sob a influência da concentração, volume e tempo de contato do irrigant...

Este trabalho teve como objetivo avaliar a sintomatologia dolorosa pós-tratamento endodôntico, em sessão única, em dentes unirradiculares com necrose pulpar, variando duas técnicas de patência do forame: com e sem preparo prévio dos terços cervical e médio. Os pacientes foram divididos de forma aleatória em dois grupos (n=23). Grupo SSP (Sem Prepar...

Análise clínica do diâmetro do forame dos molares de acordo com a faixa etária e diagnóstico pulpar e perirradicular Clinical analysis of the molar's foramen diameter according to the age range and pulp and periradicular diagnosis Análisis clínico del diámetro del foramen molar según rango de edad y diagnóstico pulpar y perirradicular Resumo Introd...

Aim: This study compared the efficacy of three reciprocating systems with different heat treatments in removing obturator material from lower molar mesial canals. Methodology: The mesial canals of 18 lower molars were instrumented with ProTa-per Next 25/0.06 and filled with gutta-percha and AHPlus. The teeth were randomly divided into three groups...

Introduction The aim of this study was to evaluate pain perception, pain medication intake, and sealer extrusion after single-visit root canal treatment of asymptomatic teeth, with or without foraminal enlargement. The correlation between sealer extrusion and pain was also investigated. Methods One hundred and forty necrotic, single-rooted teeth w...

Introdução: De todas as especialidades na Odontologia, uma das mais favorecidas nos últimos anos com o desenvolvimento de novas tecnologias tem sido a Endodontia. Objetivo: O presente estudo visou obter informações sobre os aspectos técnicos dos tratamentos endodônticos realizados por cirurgiões-dentistas da Polícia Militar do Estado de São Paulo (...

This study evaluated the ability of reciprocating glide path instruments to reach the full working length (RFWL). Thirty mesial roots of mandibular molars were matched into 2 groups (n = 15 teeth, 30 root canals), according to the system used for glide path: WaveOne Gold Glider (WOGG) and R‐Pilot. The samples with fractured instruments or when it w...

Avaliação da eficácia do XP-endo Finisher, Easy Clean, irrigação ultrassônica passiva e irrigação convencional na remoção de hidróxido de cálcio em cavidades de reabsorção internas simuladas Evaluación de la eficacia de XP-endo Finisher, Easy Clean, irrigación ultrasónica pasiva e irrigación convencional en la eliminación de hidróxido de calcio en...

Aim and objective: This study assessed the fracture resistance and failure mode frequencies in three post and core systems: CAD/CAM-fabricated glassfiber post and core, glassfiber post and core customized with composite resin, and cast metal post and core. Materials and methods: After endodontic obturation and the post space preparation, 30 extract...

This randomized clinical trial aimed to evaluate the endodontic retreatment techniques influence using reciprocating files and ultrasonic inserts in relation to the incidence, intensity, and postoperative pain duration. Forty-six patients were randomly assigned into two groups: Reciprocant files (RC group); or the Clearsonic Ultrasonic Insert (CL g...

Aim To evaluate the performance of two reciprocating glide path systems, WaveOne Gold Glider (WO) and R‐Pilot (RP), to create a glide path in mesial root canals of mandibular molars and to assess the torsional resistance of instruments after performing the glide path. Methodology A total of 60 mesial root canals of extracted human mandibular molar...

The objective of this study was to develop a chitosan-based biomaterial with calcium hydroxide and 2% chlorhexidine for intracanal treatment application and, consequently, to diminish the number of microorganisms in the root canal system. The chitosan solution was prepared by dissolving it in 2% and 4% acetic acid (v/v) for 1 h at room temperature...

Introduction: The aim of this study was to compare the efficacy of passive ultrasonic irrigation (PUI) versus mechanical agitation of the irrigant promoted by the EasyClean (EC) and XP-Endo Finisher (XP-F) systems in removing debris from root canal walls, using environmental scanning electron microscopy (ESEM). Methods and materials: Twelve curv...

Context: It is essential to know if the immersion in sodium hypochlorite (NaOCl) influences the cyclic fatigue resistance of nickel-titaniumm (NiTi) files. Aim: This study was aimed to evaluate the resistance to the cyclic fatigue of three NiTi systems, as well as the influence of 5.25% NaOCl on their resistance. Methods: Files from the Sequen...

Aim: To compare canal preparation time and apical extrusion of debris during instrumentation with the ProTaper Next (PTN), HyFlex CM (HCM), HyFlex EDM (HEDM), WaveOne Gold (WOG), and Reciproc Blue (RCB) systems. Methodology: Seventy-five roots of extracted mandibular first molars, with curved mesiobuccal canals (10–20°) and independent foramina, w...

Introduction: The aim of this study was to evaluate the possible associations between pre-established clinical variables and manifestation of postoperative pain after endodontic treatments performed by graduate students in endodontics, from June 2016 to December 2017. Methods and materials: A total of 998 dental patient charts were included in t...

Introduction: The aim of this study was to conduct a micro-computed tomographic (micro-CT) assessment of the effectiveness of three supplementary cleaning techniques in reducing the residual volume of gutta-percha and a bioceramic sealer after performing endodontic retreatment procedures in teeth with oval canals. Methods: Thirty-six mandibular...

Objective: This study aimed to analyze the effectiveness of three irrigation systems: EndoActivator, passive ultrasonic irrigation (PUI), and Easy Clean in the reduction of Enterococcus faecalis, after instrumentation with the reciprocating system, through microbiological collection and culture method. Materials and methods: A total of 60 extrac...

Objective To evaluate the influence of chelating agents (EDTA, citric acid and Tetraclean) on glass fiber posts adhesion to root dentin. Materials and Methods Forty mandibular premolars single canals, with complete apical root, straight, circular cross sections were selected, accessed and had the cervical third prepared with Gates-Glidden drills, t...

Introduction: Maxillary premolars, may be more susceptible to fracture due to their anatomy; especially when there is loss of tooth structure. Therefore, it is necessary to evaluate materials and techniques that may increase fracture resistance during and post root canal treatment. This in vitro study aimed to evaluate root fracture resistance of...

Introduction: The predictability of successful non-surgical endodontic retreatment is directly related to it's ability to completely cleanse and remove obturation material from the canal system. The purpose of this study was to evaluate the removal of gutta-percha from curved canals using three final irrigation methods: passive ultrasonic irrigati...

Introduction This study aimed at assessing whether ultrasonic activation (UA), EasyClean (EC) or EDDY (ED) systems, used to promote agitation of the irrigating solutions during the final irrigation step, can lead to smear layer formation in the apical third of the root canal. Methods Thirteen premolars were instrumented with the Reciproc R40 file...

Aim This prospective clinical study evaluated the incidence of instrument fracture observed after single‐file root canal treatment of molars using WaveOne Gold instruments. Methodology Three standardized, experienced and calibrated specialists treated 750 maxillary and mandibular molars with curvatures less than 45° (2,691 root canals) over a 12‐m...

Introduction The aim of this study was to evaluate the volume of irrigant extrusion by different final agitation techniques in experimental models of immature teeth. Methods Fifteen single roots of mandibular premolars with a length of 14 mm and an open apex were used to form 6 groups according to the final agitation technique: group 1, positive p...

Objective: This study aimed to evaluate the effect of ultrasonic cleaning of the intracanal post space on the bond strength of fiber posts in oval canals filled with a premixed bioceramic (Bio-C Sealer [BIOC]) root canal sealer. Materials and methods: Fifty premolars were endodontically prepared and divided into 5 groups (n = 10), based on the t...

The aim of this study was to compare the root canal instrumentation techniques that involve foraminal enlargement versus those not involving it, in regard to the apical extrusion of filling material, using micro‐computed tomography (micro‐CT). Twenty‐two premolars with single canals were instrumented using the ProTaper Universal System and then ran...

Background: The ability of the Reciproc system (R40) followed by continuous ultrasonic irrigation (CUI) to remove filling material from oval root canals of mandibular premolars filled with gutta-percha and AH Plus or Bio-C Sealer was evaluated by microtomography (micro-CT). Material and methods: The straight and oval root canals of 42 mandibular...

Objective The objective of this study was to quantify the amount of debris apically extruded after instrumentation with two reciprocating systems. Materials and Methods Forty-two single-rooted mandibular premolars with only one straight root canal and apical diameter compatible with a no. 15 K-file were randomly divided into two groups (n = 21) acc...

Context: Postoperative pain control after endodontic treatment is important to maintain patient comfort. Aim: The aim of this prospective clinical study was to evaluate the postoperative symptomatology of endodontic treatments performed in a single session, with or without photodynamic therapy (PDT), using Reciproc #40 file in necrotic unirradic...