Review
Medicine, General & Internal
Mohmed Isaqali Karobari, Ali A. Assiry, Galvin Sim Siang Lin, Hussain Almubarak, Saleh Ali Alqahtani, Robina Tasleem, Mohammed Mustafa, Alexander Maniangat Luke, Krishna Prasad Shetty, Tahir Yusuf Noorani, Giuseppe A. Scardina
Summary: This paper reviews the literature on root canal configuration (RCC) and root structure of permanent mandibular premolars. A systematic search was conducted on four electronic databases to find relevant scientific literature up to July 2022. The selected studies focused on mandibular premolars, including their root and canal system, morphology, along with anatomy. The findings of the study revealed the prevalence of different RCC types and the use of CBCT imaging for studying the structural characteristics of mandibular premolars.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Dentistry, Oral Surgery & Medicine
Cangul Keskin, Ali Keles, Marco Aurelio Versiani
Summary: This study found that the MB-P interorifice distance is a strong predictor of the presence of the MB2 canal in maxillary second molars with fused roots. The MB-P distance showed good diagnostic accuracy in predicting the MB2 canal, providing valuable information for clinicians to identify and treat this specific condition effectively.
JOURNAL OF ENDODONTICS
(2021)
Article
Dentistry, Oral Surgery & Medicine
Marilia F. Marceliano-Alves, Pablo Amoroso-Silva, Flavio R. F. Alves, Giuliana Soimu, Jose C. Provenzano, Andrea F. Campello, Martha Lucely Duarte, Jaime O. Moreno, Alfredo Sierra-Cristancho, Jaime Tapia Calle, Isabela N. Rocas, Jose F. Siqueira Jr
Summary: The study evaluated and compared anatomical parameters of mandibular first premolars from individuals from different Latin American countries. Single root morphology was most common, with Vertucci's type-I canal being the predominant configuration. Significant differences were found in various anatomical parameters, including canal configurations, orifice shapes, and occurrences of ramifications between the countries.
ARCHIVES OF ORAL BIOLOGY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Jorge N. R. Martins, Yuerong Zhang, Murilo von Zuben, Walter Vargas, Hussein C. Seedat, Ruben Rosas Aguilar, Magnus F. Ragnarsson, Gianluca Plotino, Peter Parashos, Hani F. Ounsi, Christian Nole, Adam Monroe, Jojo Kottoor, Jose Antonio Gonzalez, Daniel Flynn, Antonis Chaniotis, Imran Cassim, Carlos Boveda, Luiza Berti, Zaher Altaki, Moataz-Bellah A. M. Alkhawas, Hussam Alfawaz, Emmanuel J. N. L. Silva, Marco Aurelio Versiani
Summary: A global analysis revealed significant differences in the prevalence of lingual canals in mandibular premolars among different ethnicities, geographic regions, ages, and sexes, which is important for dental treatment and prevention for patients.
JOURNAL OF ENDODONTICS
(2021)
Article
Dentistry, Oral Surgery & Medicine
Yoon Joo Choi, Chena Lee, Kug Jin Jeon, Ji-Taek Jang, Sang-Sun Han
Summary: This study used CBCT to investigate the anatomy of mandibular premolars in a Korean population, revealing that most premolars have a single canal but first premolars have a higher prevalence of complex canals compared to second premolars, and radicular grooves are significantly more common in male patients.
CLINICAL ORAL INVESTIGATIONS
(2022)
Article
Multidisciplinary Sciences
Alfredo Sierra-Cristancho, Luis Gonzalez-Osuna, Daniela Poblete, Emilio A. Cafferata, Paola Carvajal, Carla P. Lozano, Rolando Vernal
Summary: The root anatomy and root canal system morphology of mandibular first premolars in a Chilean population showed a wide range of anatomical variations. Teeth with multiple root canals had a higher incidence of radicular grooves, which were closely related to more complex internal anatomy. Tomes' anomalous root was only present in teeth with multiple root canals.
SCIENTIFIC REPORTS
(2021)
Article
Dentistry, Oral Surgery & Medicine
Weiwei Wu, Qiang Guo, Boon Kit Tan, Dingming Huang, Xuedong Zhou, Ya Shen, Yuan Gao, Markus Haapasalo
Summary: This study comprehensively assessed the anatomic features of distolingual roots and canals in mandibular first molars using micro-computed tomographic imaging. A new 7-category classification system was proposed for the DL roots, providing a better understanding of the clinically challenging anatomy of the root and canal.
JOURNAL OF ENDODONTICS
(2021)
Article
Veterinary Sciences
Han Chia, Kendall Taney, Don Hoover, James B. Robertson, Lenin A. Villamizar-Martinez
Summary: Based on retrospective evaluation of cone-beam computed tomography and high-definition computed tomography exams from 103 small breed dogs under 15 kg, the study found that most of the roots of the first mandibular molar tooth in these dogs were located at the lingual aspect of the mandibular canal (82.7%) with an overall superimposition median with the canal of 100% and 90% for the mesial and distal roots, respectively. Straddle tooth roots were not common in the dogs of this study.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Dentistry, Oral Surgery & Medicine
Flavia Darius Vivacqua, Marco Antonio Hungaro Duarte, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Renan Diego Furlan, Clovis Monteiro Bramante
Summary: This study used micro-computed tomographic imaging to analyze the quality of endodontic preparation of mesial canals in mandibular molars provided by 3 instrumentation protocols. The results showed that using larger tip files with lower taper 1mm before the foramen resulted in a larger volume of apical preparation, centralization of the preparation, and safe apical dentin wear.
JOURNAL OF ENDODONTICS
(2021)
Article
Dentistry, Oral Surgery & Medicine
Ahmet Mert Nalbantoglu, Deniz Yanik
Summary: This study retrospectively investigated the facial alveolar bone thickness and fenestration rate of maxillary premolars using CBCT. The results showed that the FAB thicknesses are lower in the first premolar than the second premolar. The prevalence of fenestration in maxillary premolars was higher in the Turkish subpopulation than in other populations.
ARCHIVES OF ORAL BIOLOGY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Min Chen, Hao Wang, Chialing Tsauo, Dingming Huang, Xuedong Zhou, Jinzhi He, Yuan Gao
Summary: This study investigated the root canal morphology and thickness of the crown and root of mandibular incisors in a Chinese subpopulation using micro-CT. Three canal categories were identified, and the anatomical features were found to be valuable for endodontic treatment.
CLINICAL ORAL INVESTIGATIONS
(2022)
Article
Dentistry, Oral Surgery & Medicine
George T. M. Candeiro, Ingrid Mendonca Monteiro Dodt Teixeira, Dhaniel Anderson O. limpio Barbosa, Nilton Vivacqua-Gomes, Flavio R. F. Alves
Summary: This CBCT-based study in a large Brazilian population found that approximately 20% of mandibular central and lateral incisors had two root canals, while canines had 10%. The majority of individuals demonstrated bilateral symmetry between contralateral teeth. No significant sex influence was found for lower lateral incisors and canines, but a higher prevalence of two canals in men was noted for lower central incisors.
JOURNAL OF ENDODONTICS
(2021)
Article
Dentistry, Oral Surgery & Medicine
Mohmed Isaqali Karobari, Azhar Iqbal, Jamaluddin Syed, Rumesa Batul, Abdul Habeeb Adil, Sara Akili Khawaji, Mohammed Howait, Osama Khattak, Tahir Yusuf Noorani
Summary: The present study aims to assess the morphology of roots and canals in permanent mandibular premolars in the Saudi subpopulation with a new classification system. The study found that single-rooted premolars accounted for approximately 47% while double-rooted premolars accounted for about 2%. There was a higher diversity of root canal configurations in males.
Article
Dentistry, Oral Surgery & Medicine
Lin Yang, Jingchao Han, Qibao Wang, Zhuoran Wang, Xijiao Yu, Yi Du
Summary: This study investigated the root canal morphology of mandibular second molars in a Chinese population and found that the most common morphology is two separate roots with three canals. The prevalence of C-shaped root canals is higher in females than in males, and C-shaped canals are typically bilateral.
Article
Dentistry, Oral Surgery & Medicine
Azhar Iqbal, Mohmed Isaqali Karobari, Mohammad Khursheed Alam, Osama Khattak, Sultan Metab Alshammari, Abdul Habeeb Adil, Tahir Yusuf Noorani, Hamoud Ali Algarani, Meshal Aber Alonazi, Kumar Chandan Sirivastava, Rakhi Issrani
Summary: Adequate knowledge of root canal morphology and possible variations is crucial for successful root canal treatment. This study included 3420 samples from 285 cone-beam computed tomography images of Saudi residents, revealing a higher prevalence of canal variations in mandibular permanent anteriors and limited gender differences in root canal morphology except for canines.
Article
Dentistry, Oral Surgery & Medicine
Victor de Moraes Cruz, Marco Antonio Hungaro Duarte, Augusto Shoji Kato, Murilo Priori Alcalde, Letycia Accioly Simoes Coelho, Mario Tanomaru-Filho, Giulio Gavini, Rodrigo Ricci Vivan
Summary: This study evaluated the volume of irrigant diffusion by different techniques of final agitation using micro-computed tomography. The results showed that the groups with ultrasonic agitation and XP-Clean had significantly higher total diffusion than the groups with conventional injection, EndoActivator, and RinsEndo.
AUSTRALIAN ENDODONTIC JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Karina Torres Pomini, Daniela Vieira Buchaim, Ana Carolina Cestari Bighetti, Abdul Latif Hamze, Carlos Henrique Bertoni Reis, Marco Antonio Hungaro Duarte, Murilo Priori Alcalde, Benedito Barraviera, Rui Seabra Ferreira Junior, Alexandre Teixeira de Souza, Paulo Sergio da Silva Santos, Joao Paulo Galletti Pilon, Miguel Angelo de Marchi, Dayane Maria Braz Nogueira, Cleuber Rodrigo de Souza Bueno, Wendel Cleber Soares, Rogerio Leone Buchaim
Summary: Extending the use of heterologous fibrin biopolymer, this pre-clinical study examined the formation of a less dense scaffold to facilitate bone cell infiltration by adjusting the proportionality of its components. Combined with laser photobiomodulation therapy, it aimed to accelerate the repair process and reduce recovery time. The study found that the laser-treated groups showed higher bone volume and bone area, indicating the potential effects of laser radiation in promoting bone regeneration.
Review
Dentistry, Oral Surgery & Medicine
Emmanuel J. N. L. Silva, Karem P. Pinto, Felipe G. Belladonna, Claudio M. A. Ferreira, Marco A. Versiani, Gustavo De-Deus
Summary: This systematic review and meta-analysis show that pulpotomy is a highly effective treatment for managing permanent teeth. The results indicate that the success rate of pulpotomy using ProRoot MTA is significantly higher than when using calcium hydroxide. However, the certainty of evidence supporting these findings is low, and there is a need for well-designed RCTs to assess the long-term outcomes of pulpotomy using newer bioceramic materials.
INTERNATIONAL ENDODONTIC JOURNAL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Emmanuel J. N. L. Silva, Natasha C. Ajuz, Jorge N. R. Martins, Bernardo R. Antunes, Carolina O. Lima, Victor T. L. Vieira, Francisco Manuel Braz-Fernandes, Marco A. Versiani
Summary: This study aimed to compare three rotary instruments produced by the EDM process with the heat-treated ProTaper Gold system regarding design, metallurgy, mechanical properties and shaping ability. The results showed that HyFlex EDM, Neoniti, and EDMax rotary instruments had similar designs, metallurgy, and mechanical performances when compared with ProTaper Gold. However, there were no differences in their shaping ability.
INTERNATIONAL ENDODONTIC JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Jorge N. R. Martins, Emmanuel J. N. L. Silva, Duarte Marques, Abayomi O. Baruwa, Joao Carames, Francisco Braz M. Fernandes, Marco A. Versiani
Summary: This article explores the importance of multimethod research in assessing the performance of nickel-titanium (NiTi) endodontic instruments. It highlights the limitations of relying solely on mechanical tests and acknowledges the challenge of replicating real-world conditions. Multimethod research, which combines qualitative and quantitative methodologies, offers a promising solution to address this challenge effectively.
APPLIED SCIENCES-BASEL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Ana Flavia Almeida Barbosa, Carolina Oliveira de Lima, Bernardo Rempto Antunes, Luciana Moura Sassone, Marco Aurelio Versiani, Emmanuel Joao Nogueira Leal da Silva
Summary: This study evaluated the preparation status, dentine removal volume, and dentine thickness of buccal canals in 22 maxillary molars with and without the MB2 using instruments with the same tip size but different tapers. Micro-CT scans were performed after each instrument. The results showed that there was an increase in dentine removal volume and a decrease in unprepared areas and dentine thickness after each treatment step, with higher reduction in dentine thickness in the MB2 canal compared to the mesiobuccal and distobuccal canals. Knowledge of pre-operative dimensions and dentine thickness is crucial to avoid excessive dentine removal.
AUSTRALIAN ENDODONTIC JOURNAL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Theodoro Weissheimer, Marco Antonio Hungaro Duarte, Marcus Vinicius Reis So, Ricardo Abreu da Rosa, Michel Klymus Espinosa, Rodrigo Ricci Vivan, Murilo Priori Alcalde
Summary: This study investigated the cyclic fatigue and torsional resistance of different rotary files at body temperature. Reciproc Blue had the highest time to fracture, followed by Wave One Gold and Unicone Plus. There was no significant difference in the number of cycles to fracture between Reciproc Blue and Wave One Gold. Unicone showed the highest torque values and the lowest angular deflection. SEM analysis revealed typical failures features in both cyclic and torsional fatigue tests.
AUSTRALIAN ENDODONTIC JOURNAL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Paulo Takeji Moriya, Kleber Kildare Teodoro de Carvalho, Anil Kishen, Erick M. Souza, Marco A. Versiani
Summary: The aim of this study is to compare the stress produced on the internal walls of simulated canals by different rotary and reciprocating systems. The stress generated on the canal walls were evaluated using a semi-quantitative scale by two independent observers. The results showed that instruments with larger taper, lower speed, reciprocating motion, and made of heat-treated NiTi alloy exhibited higher patterns of stress distribution on the canal walls.
INTERNATIONAL ENDODONTIC JOURNAL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Jorge N. R. Martins, Emmanuel Joao Nogueira Leal Silva, Duarte Marques, Ricardo Pinto, Helena Francisco, Natasha Ajuz, Mario Rito Pereira, Francisco Manuel Braz Fernandes, Marco Aurelio Versiani
Summary: By comparing the design, metallurgy, and mechanical properties of different heat-treated reciprocating instruments, it was found that there were variations in the phase transformation temperatures and torsional and bending test outcomes. However, there were no significant differences in the irrigation flow pattern among the different groups.
INTERNATIONAL ENDODONTIC JOURNAL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Emmanuel J. N. L. Silva, Murilo P. Alcalde, Jorge N. R. Martins, Victor T. L. Vieira, Rodrigo R. Vivan, Marco A. H. Duarte, Felipe G. Belladonna, Francisco Manuel Braz-Fernandes, Marco A. Versiani
Summary: This study aims to assess the influence of a flat-side design on the geometry, metallurgy, mechanical performance, and shaping ability of a novel nickel-titanium rotary instrument. The results showed that the flat-side instrument demonstrated enhanced cutting ability compared to its nonflat counterpart, but inferior performance in terms of time, rotation, and maximum torque to fracture, along with distinct phase transformation temperatures. No significant differences were observed in other aspects between flat and nonflat instruments.
INTERNATIONAL ENDODONTIC JOURNAL
(2023)
Article
Anatomy & Morphology
Gabriel Barcelos So, Giovana Siocheta, Pedro Calefi, Murilo Alcalde, Rodrigo Ricci Vivan, Marco Antonio H. Duarte, Marcus Vinicius Reis So, Ricardo Abreu da Rosa
Summary: This study evaluated the cyclic and torsional fatigue resistance of a new nickel-titanium instrument. It found that the Flat File 25.04 had lower cyclic fatigue and reciprocating motion improved the cyclic fatigue resistance. The Flat File 25.04 also showed good resistance to torsional fatigue.
MICROSCOPY RESEARCH AND TECHNIQUE
(2023)
Article
Dentistry, Oral Surgery & Medicine
Emmanuel J. N. L. Silva, Jorge N. R. Martins, Natasha C. Ajuz, Henrique dos Santos Antunes, Victor Talarico Leal Vieira, Francisco Manuel Braz-Fernandes, Felipe Goncalves Belladonna, Marco Aurelio Versiani
Summary: This study aimed to compare 3 reciprocating systems in terms of design, metallurgy, mechanical properties, and shaping ability. The results showed that although there were differences in design, temperature transition phases, and mechanical behavior parameters among the tested instruments, they were similar in terms of shaping ability.
CLINICAL ORAL INVESTIGATIONS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Emmanuel Joao Nogueira Leal Silva, Jorge N. R. Martins, Marco Aurelio Versiani
INTERNATIONAL ENDODONTIC JOURNAL
(2023)
Review
Dentistry, Oral Surgery & Medicine
M. A. Versiani, J. N. R. Martins, R. Ordinola-Zapata
Summary: This article explores the importance of root canal anatomy in endodontic procedures, and the recent advancements in three-dimensional computed tomography that have allowed for more detailed evaluations of root canal morphology. Research has uncovered that the root canal is a complex system, consisting of not only the main root canal but also lateral components, posing significant challenges in the treatment process.
AUSTRALIAN DENTAL JOURNAL
(2023)