Article
Medicine, General & Internal
Maryam Tofangchiha, Soheil Koushaei, Maryam Mortazavi, Zahra Souri, Ahad Alizadeh, Romeo Patini
Summary: The study assessed the positive predictive value of panoramic radiographic signs in determining the relationship between impacted mandibular third molars (IMTMs) and the mandibular canal (MC). Results showed that root apex darkening and interference with the white line on panoramic radiographs had a high PPV for detecting the contact between IMTMs and MC. Presence of these risk factors indicates the necessity for subsequent 3D radiographic assessments.
Article
Dentistry, Oral Surgery & Medicine
Kata Janovics, Balazs Soos, Akos Toth, Jozsef Szalma
Summary: This study aimed to identify specific panoramic radiographic signs that can reliably identify inferior alveolar nerve entrapment (IANE) root conformations. Interruption of both cortical lines and upward diversion of the inferior alveolar canal were found to be the most accurate single signs indicating IANE. Combining these signs with root darkening, interruption, and a rotated M3 provided the most accurate predictions of IANE. The study suggests focusing on upward diversion, darkening, interruption, and rotation of M3 when filtering for IANE, especially in cases involving multiple signs.
JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY
(2021)
Article
Medicine, General & Internal
Sung-Woon On, Seoung-Won Cho, Soo-Hwan Byun, Byoung-Eun Yang
Summary: This study investigated the incidence of inferior alveolar nerve (IAN) injury during surgical extraction of mandibular third molars (M3), finding a significantly higher incidence in the group with IAN exposure compared to the group without exposure. The main risk factor for IAN injury was determined to be age.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Medicine, General & Internal
Aleksandra Jaron, Ewa Gabrysz-Trybek, Joanna Bladowska, Grzegorz Trybek
Summary: The development and common use of radiology, rapid prototyping, and 3D printing in dentistry have inspired the improvement of diagnostic and therapeutic processes. A comparative analysis was conducted on dental panoramic radiographs, cone-beam computed tomography, and 3D printing in assessing the difficulty of surgical procedures, showing that linear measurements in dental panoramic radiographs were significantly lower than in CBCT and 3D models. Overall, the results suggest that the elective procedure of removing impacted mandibular third molars may be safe based on insignificant differences in measurements between 3D models and CBCT images.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Dentistry, Oral Surgery & Medicine
Tomoaki Imai, Seiko Kubota, Ayano Nishimoto, Sho Katsura-Fuchihata, Narikazu Uzawa
Summary: This study aimed to identify risk factors associated with perforation of the undercut (U)-shaped lingual plate (LP) by the lower third molar (LM3) root using panoramic radiography (PAN). The study found that men aged over their midtwenties with Class I/II impaction and mesioangularly or horizontally impacted LM3s, along with root darkening and no interruption of the white line on PAN, have a higher risk of U-type LP perforation.
Article
Medicine, General & Internal
Nan-ju Lee, Seo-Yeon Jung, Kyeong-Mee Park, Yiseul Choi, Jisun Huh, Wonse Park
Summary: Root migration may occur after coronectomy of the third molar, with factors such as root morphology, complete removal of the apical portion, complete removal of the coronal portion, impaction depth, and mesiodistal and buccolingual angulations playing a role.
Article
Dentistry, Oral Surgery & Medicine
Katsuki Takebe, Tomoaki Imai, Seiko Kubota, Ayano Nishimoto, Shigeki Amekawa, Narikazu Uzawa
Summary: The study aimed to develop a deep learning model for the automated evaluation of the association between lower third molars and the inferior alveolar nerve. The YOLO-driven deep learning model showed high accuracy and performance compared to oral surgeons. It can assist oral surgeons in making decisions regarding the need for additional CBCT.
JOURNAL OF DENTAL SCIENCES
(2023)
Article
Biology
Antonio Lo Casto, Giacomo Spartivento, Viviana Benfante, Riccardo Di Raimondo, Muhammad Ali, Domenico Di Raimondo, Antonino Tuttolomondo, Alessandro Stefano, Anthony Yezzi, Albert Comelli
Summary: The purpose of this investigation was to evaluate the diagnostic performance of two convolutional neural networks (CNNs) in analyzing the relationship between the lower third molar (MM3) and the mandibular canal (MC) in panoramic images, and to compare it with that of an inexperienced observer. The CNN algorithms achieved higher diagnostic accuracy, sensitivity, specificity, and positive predictive value (PPV) compared to the inexperienced observer. This study demonstrated the potential use of deep CNN architecture in identifying and evaluating the contact between MM3 and MC in panoramic pictures.
Article
Dentistry, Oral Surgery & Medicine
Dhanaporn Papasratorn, Suchaya Pornprasertsuk-Damrongsri, Suraphong Yuma, Warangkana Weerawanich
Summary: This study aimed to train deep learning models to recognize the contiguity between mandibular third molar and inferior alveolar canal using panoramic radiographs, and investigate the best effective fold of data augmentation. The models were trained with three pretrained models: AlexNet, VGG-16, and GoogLeNet. Evaluation of the models' performance was done using receiver operating characteristic curves.
CLINICAL ORAL INVESTIGATIONS
(2023)
Article
Medicine, General & Internal
Tianer Zhu, Daqian Chen, Fuli Wu, Fudong Zhu, Haihua Zhu
Summary: This study developed a novel detection model for automatically assessing the real contact relationship between mandibular third molars and the inferior alveolar nerve based on panoramic radiographs processed with deep learning networks. Results showed that the cooperative dentist-MM3-IANnet approach yielded the highest average precision compared to detection by dentists or the MM3-IANnet alone.
Article
Medicine, General & Internal
Marcia Almeida-Marques, Mara Magnoler Sampaio Ingold, Alberto Ferreira da Silva-Junior, Ademir Franco, Jose Luiz Cintra Junqueira, Anne Caroline Oenning
Summary: This study compared panoramic radiography and cone-beam computed tomography for evaluating the roots of maxillary third molars and their relationship with the maxillary sinus. The study found that panoramic radiography can reliably determine the number of roots and root morphology but does not provide radiographic signs related to the anatomical relationship with the maxillary sinus.
MEDICINA-LITHUANIA
(2023)
Article
Dentistry, Oral Surgery & Medicine
Jan C. Klatt, Tony Sorowka, Lan Kluwe, Ralf Smeets, Martin Gosau, Henning Hanken
Summary: This study aimed to analyze the role of preoperative Cone Beam CTs in the surgical removal of complex lower third molars and to evaluate the impact of nerve injuries and neurological disorders. The results show that CBCT does not significantly affect the risk for complications during surgery and should only be used for risk assessment. Additionally, exposure of the inferior alveolar nerve bundle during surgery does not necessarily predict neurological damage.
HEAD & FACE MEDICINE
(2021)
Article
Medicine, General & Internal
Alberto Materni, Nicola De Angelis, Nicolo Di Tullio, Esteban Colombo, Stefano Benedicenti, Andrea Amaroli
Summary: This study compared a flapless surgical approach (FSA) with a traditional envelope flap (TA), showing that FSA has advantages in attached gingiva, oedema, and pain, with a shorter surgical time.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Chemistry, Multidisciplinary
Hee Jin Kim, Ye Joon Jo, Jun Seok Choi, Hyo Joon Kim, Jin Kim, Seong Yong Moon
Summary: This study aimed to analyze the incidence and risk factors of inferior alveolar nerve injury after extraction of mandibular third molars. Root-related changes were found to be the main risk factors for nerve damage, leading to symptoms post-extraction.
APPLIED SCIENCES-BASEL
(2021)
Article
Dentistry, Oral Surgery & Medicine
Shijun Kuang, Yuhao Liu, Weijie Zhuang, Kechen Li, Wenbin Yang, Yihong Tian
Summary: This study investigated the influence of root orientation on inferior alveolar nerve (IAN) injury during impacted mandibular third molars (IMTMs) extraction using propensity score matching (PSM). The results showed that root orientation is an independent risk factor of IAN injury, with a higher risk when the root is located on the buccal side of the IAC.
Article
Anatomy & Morphology
Sepideh Dadgar, Hoora Hadian, Mohamadreza Ghobadi, Farhad Sobouti, Vahid Rakhshan
Summary: The study found sex dimorphism in both skeletal and dental development, with chronological age being the best predictor of skeletal growth and maturation. In girls, the Demirjian method was better than CVM for estimating age, while in boys, Demirjian was better for molars but not canines. Cutoff points for reflecting skeletal growth spurt were determined for boys at age 12 and for girls between ages 11 and 12, with specific tooth stages identified.
SURGICAL AND RADIOLOGIC ANATOMY
(2021)
Article
Engineering, Biomedical
Farhad Sobouti, Nasim Chiniforush, Hamid Jaahed Saravani, Mohammad Noroozian, Mark Cronshaw, Reza Alizadeh Navaei, Vahid Rakhshan, Sepideh Dadgar
Summary: The study showed that the combination of compound topical anesthetic and photobiomodulation therapy provided adequate local anesthesia for the placement of miniscrews in the buccal side of the maxillary bone during the procedure and effectively reduced postoperative pain levels.
LASERS IN MEDICAL SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Vahid Rakhshan, Fataneh Ghorbanyjavadpour, Negin Ashoori
Summary: This study aimed to measure the dimensions of permanent dentition in Iranian orthodontic patients and establish cut-off points for sex identification based on these measurements. The results showed that sex dimorphism was common in dental measurements, influenced by various factors, with mandibular canines being the most appropriate teeth for sex identification.
BIOMED RESEARCH INTERNATIONAL
(2022)
Review
Biotechnology & Applied Microbiology
Farhad Sobouti, Mehdi Aryana, Sepideh Dadgar, Reza Alizadeh Navaei, Vahid Rakhshan
Summary: This study compared and summarized the effects of various porcelain surface treatments on the bonding of orthodontic brackets to feldspathic porcelain restorations. The results indicated that certain methods may provide stronger bond strength.
BIOMED RESEARCH INTERNATIONAL
(2022)
Editorial Material
Mathematical & Computational Biology
Vahid Rakhshan, Alexandre Hideki Okano, Zhiyong Huang, Gianluca Castelnuovo, Abrahao F. Baptista
COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Vahid Rakhshan, Peyman Hassani-Abharian, Mohammadtaghi Joghataei, Mohammad Nasehi, Reza Khosrowabadi
Summary: This study aimed to assess the effects of different frequencies of binaural beats on working memory and attention. The results showed that 10 Hz binaural beats can improve certain cognitive parameters in the visuospatial modality, but not in the auditory-verbal modality. Additionally, short-term training can enhance working memory and attention.
BIOMED RESEARCH INTERNATIONAL
(2022)
Article
Dentistry, Oral Surgery & Medicine
Milad Shamohammadi Heidari, Mehrnaz Moradinejad, Hamed Tabatabaei, Vahid Rakhshan
Summary: This preliminary study examined the effectiveness of three new adhesives containing zirconia primers in attaching metal orthodontic brackets to zirconia crowns. The results showed that all three adhesives provided sufficient shear bond strengths to attach the brackets without damaging the zirconia.
INTERNATIONAL JOURNAL OF DENTISTRY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Shirin Taravati, Zohreh Balak, Vahid Rakhshan
Summary: This study aimed to evaluate the accuracy of digital radiography in the diagnosis of external root resorption in deciduous teeth. The results showed that digital radiography can provide a good accuracy in diagnosing and measuring external root resorption in deciduous teeth, but there might be an overestimation in the size of resorption in girls and cases with actual lesions smaller than 3mm.
INTERNATIONAL JOURNAL OF DENTISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Marzieh Mazhari, Mehrnaz Moradinejad, Mohsen Mazhary, Atefe Rekabi, Vahid Rakhshan
Summary: This study compared the effects of rigid and nonrigid connecting wires on the stress, anchorage loss, and risk of root resorption of miniscrews using finite element analysis. The results showed that using a rigid connecting wire can provide better control of the anchorage and reduce the risk of root resorption, but it increases the risk of miniscrew failure. The stress on the miniscrew is higher with a rigid connection, while it is lower with a nonrigid connection. Parametric analysis showed that a higher elastic modulus of the connecting wire in the nonrigid anchorage reduces the anchorage loss and risk of root resorption, but increases the stress on the miniscrew.
BIOMED RESEARCH INTERNATIONAL
(2022)
Editorial Material
Clinical Neurology
Vahid Rakhshan, Donald B. Giddon, Milica Prostran, Leonard Khiroug, Matteo Martini
PAIN RESEARCH & MANAGEMENT
(2023)
Article
Dentistry, Oral Surgery & Medicine
Negin Ashoori, Fataneh Ghorbanyjavadpour, Vahid Rakhshan
Summary: In this study, a total of 44 nonmetric dental traits/anomalies were reported in 331 non-syndromic orthodontic patients. Sex dimorphism was uncommon among these traits, and certain dental abnormalities or variations may be associated with skeletal malocclusions.
Article
Multidisciplinary Sciences
Farzin Sarkarat, Diba Bagheri, Roozbeh Kahali, Ali Fateh, Vahid Rakhshan
Summary: This study evaluated the effects of incorporating lidocaine into botulinum toxin A on post-injection pain and complications for the first time. The results showed that the incorporation of lidocaine can reduce pain without affecting post-injection complications.
SCIENTIFIC REPORTS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Ozra Niknam, Milad Shamohammadi, Zeynab Ataei, Vahid Rakhshan
Summary: This study investigated the effects of three orthodontic bracket adhesives and three resin removal methods on enamel discoloration. The results showed that all nine combinations of adhesives and resin removal techniques caused visible discolorations. Self-etch composites or RMGI might be recommended over total etch composites for adhesive selection. Using Stainbuster burs together with tungsten carbide burs is recommended to reduce discoloration. However, the choice of adhesive removal technique can greatly affect the coloration caused by each composite type.
INTERNATIONAL JOURNAL OF DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Mohamad Ali Ranjbaran, Farzin Aslani, Alireza Jafari-Naeimi, Vahid Rakhshan
Summary: This study investigated the influence of labial frenum attachment types on the occurrence or type of maxillary canine impaction. It was found that buccal type of impaction was positively associated with papillary labial frenums. Canine impaction occurred 3.6 times more frequently in cases with lateral abnormality. Midline diastema was positively and independently associated with canine impaction, papillary frenums, and abnormal laterals.
INTERNATIONAL ORTHODONTICS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Nasim Shams, Arash Dabbaghi, Bahar Shams, Lida Naderi, Vahid Rakhshan
Summary: The diameter of PSAA in this Iranian population is smaller compared to other populations, with very few large canals present. Although the average diameter increased in the anterior regions, large canals were not present in these regions. Males tend to have larger PSAAs, age might not change canal parameters, gender might affect canal diameter, and right/left sides are similar in terms of PSAA anatomy.
JOURNAL OF MAXILLOFACIAL & ORAL SURGERY
(2022)