Comparative efficacy of flapped versus flapless dental implant procedures: A meta-analysis.

Objectives: Dental implant procedures are crucial for replacing missing teeth, with various surgical techniques impacting the outcome. This systematic review and meta-analysis aimed to evaluate the effects of flapped and flapless surgical techniques on implant survival and marginal bone loss (MBL). Methods: We included clinical studies with at least ten subjects, excluding review articles, editorials, and conference abstracts. Studies were sourced from PubMed, Medline, ERIC, and Wiley, published between 2000 and 2022. Data were analyzed using random-effects models to compare implant survival and MBL between flapped and flapless techniques. Results: The review identified 21 studies meeting the inclusion criteria. Flapless techniques showed a higher implant survival rate with an approximate survival rate of 98.6% in prospective cohort studies and 95.9% in retrospective studies. MBL was consistently lower in the flapless group, averaging 0.6-2.1 mm, compared to 1.5-3 mm in the flapped group. Low-risk studies demonstrated more consistent and reliable results, supporting the efficacy of flapless procedures. Conclusion: Flapless implant surgery offers a viable alternative to traditional flapped surgery, showing higher rates of implant survival and less MBL. However, successful outcomes depend on advanced imaging, precise surgical techniques, and adequate training. Further high-quality studies are needed to confirm these findings and refine clinical recommendations.

Maxillofacial Bone Fractures in Children and Adolescents in Saudi Arabia: A Systematic Review.

Facial injuries, including maxillofacial trauma (MFT), are common in children and adolescents due to their age and bone maturation stage. Children's injuries are less common than adults' due to parental supervision and the flexibility of the facial bone. Causes of maxillofacial bone fractures (MFBF) vary based on socioeconomic, cultural, and environmental factors. Management of MFBF in children and adolescents should consider their growth and development stage. A systematic review is needed to understand the prevalence, pattern, and distribution of MFBF in Saudi Arabia. This systematic review aimed to identify papers on MFBF in children and adolescents in Saudi Arabia using the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement. The search strategy involved searching electronic databases like PubMed/Medline, Web of Science, and Ebsco. The review included full-text original research papers, with inclusion criteria including English publications, human studies, and no restrictions on sample size, gender, date, or language. The selection process involved screening titles and abstracts, evaluating full texts, and identifying relevant studies. Data extraction involved two authors individually assessing selected studies. The PRISMA flow diagram of the literature search revealed that 26 papers were identified, of which 15 remained after excluding duplicates. After screening titles and abstracts, 10 articles were removed, and five papers were assessed for eligibility. Four papers met the inclusion criteria for the systematic review. The studies examined 1447 patients for the presence of MFBF in different regions. The majority of MFBF were caused by falls and road traffic accidents (RTAs) in children and adolescents. Mandibular fractures were the most common, followed by maxillary fractures. The majority of patients had tooth/teeth avulsions, followed by tooth luxation and crown fractures. Only one study described investigation methods for MFBF diagnosis. The systematic review reveals a high prevalence of MFBF among children and adolescents in Saudi Arabia, primarily due to falls and RTAs. The mandible is the most frequently fractured bone, and many children have concomitant teeth involvement. To reduce MFBF, effective initiatives and parental awareness strategies are recommended.

Prevalence of palatogingival groove affecting maxillary anterior teeth in Saudi subpopulation: A cone-beam computed tomographic study with literature review.

Aim: To investigate the prevalence of palatogingival groove (PGG) affecting maxillary anterior teeth, bilateral occurrence, and distribution among sex in the Saudi subpopulation and to review the literature on the prevalence of PGG. Introduction: Palatogingival groove (PGG) primarily affects maxillary lateral incisors and, when present, may contribute to the pathogenesis of periodontal and endodontic lesions. Materials & methods: A total of 509 CBCT scans of Saudi patients with 2747 maxillary anterior teeth were included in the study. Patients' information, the tooth type, the presence/absence, the unilateral/bilateral distribution, and the type of PGG according to Gu's classification (type I, II, or III) were recorded. Results: The prevalence of the PGG in maxillary anterior teeth was 1.3%, affecting 32 (6.3%) patients. The PGGs were mostly detected in lateral incisors 25 (2.77%). The PGG was found to be unilateral in most patients (96.9%), with higher frequency in males than in females without significance for sex. Conclusion: PGG is not a rare anomaly in the Saudi population and is most frequently found in maxillary lateral incisors. Type I Gu's classification was mostly detected.

Smoking cessation interventions in patients diagnosed with head and neck cancers: A systematic review of randomized controlled trials.

Objective: According to findings from the previous studies, quitting smoking can significantly reduce mortality from all causes and is linked to better treatment results. Even though quitting smoking has many benefits, little is known about the evidence supporting the particular quit services offered to smokers after a cancer diagnosis. Methods: To find the articles related to area in question, different electronic databases including PubMed/Medline, Google Scholar, and EBSCO were searched on April 1st, 2023. All full text randomized controlled trials with one or more intervention and control groups that assessed the outcomes of smoking cessation interventions were included. Participants of included studies were adults diagnosed with head and neck cancer (HNC) and current smokers or those who had recently quit. There were interventions (pharmacological and/or pharmacological) that aimed to help patients with HNC succeed in quitting smoking. Results: We identified 15352 papers from the initial search from different electronic databases, 2560 remained after excluding duplicates. After screening titles and abstracts for relevance, 2345 articles were removed. Full text articles of remaining 215 papers were assessed in depth by two reviewers for their eligibility, amongst which, 210 articles were excluded. Finally, we included five papers that met the inclusion criteria in the present systematic review. Conclusion: According to the findings of this review, a multi - component strategy might very well benefit patients with HNC who smoke cigarettes after diagnosis. More studies with high methodological quality and standardized outcome measures must be conducted in this population to inform the development of smoking cessation program.

Malignant transformation in oral submucous fibrosis: Tertiary level evidence: An umbrella review.

OBJECTIVES: An umbrella review is a systematic review of systematic reviews, which provides a tertiary level of evidence. This umbrella review of systematic reviews and meta-analysis (SR-MA) aimed to determine the proportion of oral cancer (OC) development in oral submucous fibrosis (OSF) patients. MATERIALS AND METHODS: We searched electronic databases including PubMed, Scopus, Web of Science, Cochrane and grey literature. Two reviewers independently screened abstracts and assessed for eligible papers. The methodological quality of SR-MA was evaluated using AMSTAR2, and we also checked the quality of evidence of the included papers. RESULTS: Out of 454 papers identified in the primary search, 105 underwent eligibility screening. Inclusion criteria were met by four SR-MA. OC ratios ranged between 4.2% and 6% for OSF. Substantial heterogeneity was observed for this outcome in all four MA (I2 = 71.31% to 86.37%). None of the SRs assessed the quality of evidence, and half of them were judged to be of critically low methodological quality. CONCLUSION: There is lack of quality of evidences and critically low methodological quality among SRs and MA leading to substantial heterogeneity. However, due to potentially malignant nature, OSF patients should be monitored carefully for early detection of OC.

Insight of New Generation Dentists towards the Shifting Trends of Three-dimensional Printing for Patient Management in the Kingdom of Saudi Arabia.

Background: There is a lack of information in the few studies reporting on the use of three-dimensional (3D) Printing for Patient Management. However, few studies have been found about recent advances in 3D printing technology, and biomaterials are revolutionizing medicine. The purpose of this study is to evaluate the knowledge and attitude of new generation dentist towards 3D printing and its application in various aspects in the field of Prosthodontics. Materials and Methods: A cross-sectional study on dental practitioners/Prosthodontist throughout Saudi Arabia using a self-administered questionnaire, which had items to assess the knowledge attitude and practices of study participants toward the use of 3D printing in dental management. Results: It was observed 17.5% of our participants had complete information and 10.5% had no information about 3D printers in the field of dental medicine. When assessed, male dentists had complete information about 3D printers (17.5%) than females (0%). 43.9% of our participants "strongly agreed" for 3D printers to be implemented in dentistry, 40.4% had "no idea" regarding the experience of 3D prints. Conclusion: Very few dentists have knowledge of 3D printing application in dentistry. Hence we strongly recommend organizing continuing dental education programmed on 3D printing either with hand on workshops, conferences and regular updates on the use of this technology.

Pathological tooth migration-spontaneous correction of diastema after surgical periodontal therapy: a case report.

A common consequence of moderate to extreme periodontitis is pathologic migration. This denotes tooth movement when the periodontal disease interjects the equilibrium among the elements that preserve physiological tooth position. The balancing factors can migrate the teeth in any direction. The etiology of pathological migration tends to be multifactorial, thus achieving early diagnosis is imperative, which will ultimately lead to the prompt removal of the etiological factors while avoiding severe bone destruction. In this case maxillary central incisors had diastema due to pathological migration with mobility grade I in maxillary left central incisor. Many cases of moderate to severe pathological migration need a suitable, interdisciplinary approach. Nevertheless, since it is possible to detect mild cases of Pathological tooth migration (PTM) at an early stage, spontaneous correction of migrated teeth can be accomplished by periodontal therapy alone. Regardless of the treatment selected, maintenance of stable results should be considered as an aim of treatment.

Prevalence of Trismus and Its Impact on Oral Health-Related Quality of Life in Patients Treated for Oral Squamous Cell Carcinoma.

Oral squamous cell carcinoma, one of the most common malignancies, has a poor prognosis due to impairment in oral functions secondary to treatment. Trismus one of the major causes of impairment of oral function. The present study investigated the prevalence of trismus and its impact on oral health-related quality of life (OHRQoL) in patients treated for oral squamous cell carcinoma (OSCC). The maximum inter-incisal mouth opening of hundred OSCC patients was recorded at post-treatment and 3 months post-treatment. OHRQoL questionnaire (OHIP-14) was intervened to assess the OHRQoL of patients post-treatment and 3 months follow-up, with emphasis on correlation with grades of trismus. The prevalence of trismus was 16% pre-treatment, 72% post-treatment, and 62% at 3 months after treatment. The overall OHIP-14 scores indicated that patients with trismus reported greater impairment of OHRQoL than those without trismus at the end of treatment and 3 months follow-up. At the end of treatment, patients with severe trismus demonstrated a higher mean OHIP-14 score (23.47 ±3.34) than those with moderate (17.72 ±2.83) and mild trismus (12.66 ±3.84) with statistically significant differences (p <0.001). Equivalent results were obtained at 3 months follow-up period. Patients with trismus suffer greater impairment of OHRQoL. The findings demand the need of identifying risk factors for developing trismus and early institution of newer/modified treatment approaches for better OHRQoL in OSCC survivors.
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Oral and general health-related quality of life in oral squamous cell carcinoma patients- comparative analysis of different treatment regims.

BACKGROUND: Modern aggressive oncological treatment options for oral squamous cell carcinoma (OSCC) are inevitably associated with impaired general health-related quality of life (HRQoL) and oral HRQoL (OHRQoL). However, there is dire need for prospective and concomitant assessment of HRQoL and OHRQoL after different treatment regims. Hence, present study was designed to investigate HRQoL and OHRQoL in patients treated for OSCC using various modalities. METHODS: 135 OSCC patients were grouped according to treatment rendered into Group A: surgery only; Group B: post-surgical radiotherapy (PRT); and Group C: post-surgical chemo-radiation (PCRT). The 12-item Short Form Health Survey (SF-12) and Oral Health Impact Profile-14 (OHIP-14) were intervened to assess HRQoL and OHRQoL respectively at 1-month and 6-months post-treatment. RESULTS: At 1-month post-treatment, patients who received PCRT showed significantly lower mean values for physical and mental domains of SF-12 and higher mean subscales and overall OHIP-14 (24.57 â€‹± â€‹2.62) score than those treated by surgery alone (10.55 â€‹± â€‹2.26) and PRT (20.20 â€‹± â€‹3.80), with largest differences between PCRT and surgery alone groups (p â€‹< â€‹0.001). Social functioning, general health and bodily pain of SF-12 and functional limitations, physical pain and physical disability amongst OHIP-14 domains were greatly affected. Although few physical domains of SF-12 showed significant improvement, mental domains remained a greater problem after 6 months. However, OHRQoL was significantly poor in all the three study groups (p â€‹< â€‹0.001). CONCLUSION: Irrespective of the post-treatment duration, patients who received PCRT had worse HRQoL and OHRQoL. There is a need to identify factors associated with impaired HRQoL and OHRQoL to customize better therapeutic decisions.

Single-Atom Catalysts: A Sustainable Pathway for the Advanced Catalytic Applications.

A heterogeneous catalyst is a backbone of modern sustainable green industries; and understanding the relationship between its structure and properties is the key for its advancement. Recently, many upscaling synthesis strategies for the development of a variety of respectable control atomically precise heterogeneous catalysts are reported and explored for various important applications in catalysis for energy and environmental remediation. Precise atomic-scale control of catalysts has allowed to significantly increase activity, selectivity, and in some cases stability. This approach has proved to be relevant in various energy and environmental related technologies such as fuel cell, chemical reactors for organic synthesis, and environmental remediation. Therefore, this review aims to critically analyze the recent progress on single-atom catalysts (SACs) application in oxygen reduction reaction, oxygen evolution reaction, hydrogen evolution reaction, and chemical and/or electrochemical organic transformations. Finally, opportunities that may open up in the future are summarized, along with suggesting new applications for possible exploitation of SACs.

Oral Psychosomatic Disorders in Family Caregivers of Oral Squamous Cell Carcinoma Patients.

OBJECTIVE: To investigate the oral psychosomatic disorders (PSDs) in family caregivers (FCs) of oral cancer (OC) patients and to evaluate the correlation between these oral PSDs to severity of depression anxiety and stress. METHODS: A total of 50 participants were included each in first degree relative (FDR), second degree relative (SDR) and control group. All the participants completed DASS-21 questionnaire and were subjected to thorough clinical history and oral examination. RESULTS: All the FCs reported statistically significant higher mean levels of depression, anxiety and stress compared to controls (p˂0.001). A significantly greater number of FCs (40.00%) reported oral PSDs than control group (12.00%). Most prevalent oral PSD in FCs was aphthous stomatitis followed by oral lichen planus, bruxism, burning mouth syndrome and myofascial pain dysfunction syndrome. Moreover, there was a preponderance of these diseases in FDR (60.86%) compared to SDR (26.08%). FCs with moderate to very severe depression, anxiety and stress showed higher prevalence of these oral PSDs compared to the ones with mild depression, anxiety and stress. CONCLUSION: The observations of higher prevalence of oral PSDs in FCs with psychological alterations can enhance healthcare professionals' awareness to better understand FCs' oral healthcare needs.
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Mount Vernon Index vs Yen Angle for Assessment of Anteroposterior Apical Jaw Base Relationship.

AIMS AND OBJECTIVES: This research aimed to determine the predictability and variability of the Yen angle and Mount Vernon Index (MVI) in relation to the other four sagittal discrepancy parameters, as well as to evaluate and explain any correlations that exist. The Lateral Cephalograms of 100 Class I Indian participants aged 17-24 years were recorded. The lateral cephalograms were traced for six distinct AP characteristics, including ANB, Wits appraisal, facial convexity, and beta angle, Yen angle, and MVI. The gathered data were evaluated statistically using S.P.S.S. version 10. To determine the difference between males and females, an independent "t" test was used. The coefficient of variability and correlation methods were used to determine the correctness of the Yen angle and MVI, as well as the association between the variables. RESULTS: The results of this study indicate that the most predictable and highly dependable parameter was the Yen angle (CV = 5.63), followed by the beta angle (5.63), the MVI (CV = 13.6), the ANB, Rickett's analysis, and Wit's analysis. Throughout all five analyses, the most statistically significant positive association between the MVI and the BETA angle was determined. CONCLUSION: The derived inferences from the study included the high reliability of the yen angle for assessing the AP skeletal patterns of a patient, followed by the beta angle and MVI. HOW TO CITE THIS ARTICLE: Doshi JR, Jain P, Jain M, et al. Mount Vernon Index vs Yen Angle for Assessment of Anteroposterior Apical Jaw Base Relationship. Int J Clin Pediatr Dent 2021;14(S-1):S35-S38.

Retrospective quality assurance audit of Lateral Cephalometric Radiographs at postgraduate teaching hospital.

OBJECTIVE: The objective of our audit was to assess the quality of lateral cephalometric radiographs by investigating the percentage of lateral cephalometric radiographic images that satisfied the good quality standards. METHODS: The standard-based retrospective audit was conducted at Riphah International University, Pakistan, from April to September 2018. The sample size was 50 radiographs that were randomly selected from the radiographs taken over one year. The radiographs were graded according to the standards set by the National Radiation Protection Board by two evaluators after the necessary calibration. Moreover, the percentages of images that met the criteria set by the Royal College of Surgeons of England were identified. The data analysis was carried out by the SPSS software version 23. RESULTS: Out of the 50 radiographs, thirty-one were Grade-I, sixteen were Grade-II and three radiographs were Grade-III. Furthermore, out of the criteria set by Royal College, one criterion met the 100% standard that was correct head positioning. Less frequent errors were comprised of poor visibility of soft tissue structures (16%), teeth not properly occluded (14%), Incorrect positioning of labels (12%), Sella and Nasion not visible (8%). According to the results of the quality assurance audit, the radiographs fell short of the required standards. CONCLUSION: Quality assurance by periodic auditing is important to yield radiographs with maximum diagnostic value, minimal errors, and avoid unnecessary radiation exposure by repeat radiographs. Recommendations were made for the formulation and implementation of comprehensive radiation protection regulations, at all the Dental institutes of Pakistan.

Clinical efficacy of mouth exercising devices in oral submucous fibrosis: A systematic review.

BACKGROUND: The management of oral submucous fibrosis (OSF) is primarily focused towards minimizing patient's symptoms and to prevent cancer development. Mouth exercise physiotherapy independently or in combination with other modalities is considered to be a mainstay for increasing the mouth opening (MO). The present systematic review was performed to identify different mouth exercising devices (MEDs) used and to provide detailed information on the fabrication and clinical efficacy of these devices among OSF patients. METHODS: PubMed, Scopus, Web of Science, Google Scholar and CINAHL were searched for relevant literature until February 2019 and the information was extracted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. All full text papers describing use of MED in OSF patients were considered eligible. RESULTS: Initial search resulted in 88 hits. After removing duplicates and screening of titles and abstracts, five papers that met the inclusion criteria were included. We identified five MEDs used for increasing the MO in OSF patients. Only one study administered additional treatment with topical steroids, oral antioxidants and ice-cream stick regime. The follow-up across studies ranged from 8 weeks to 6 months. Majority of the studies reported significant improvement in the MO without any relapse and side effects. CONCLUSIONS: MED could play an important role in the management of OSF. Limited researches in this area suggest a dire need for the further investigations using randomized controlled trials.

Comparative evaluation of the effect of various irrigants and dry canal on electronic apex locators in locating simulated root perforations: an in vitro study / Avaliação comparativa do efeito de vários irrigantes e canal seco em localizadores apicais eletrônicos na localização de perfurações radiculares simuladas: um estudo in vitro

Objective: this study aimed to evaluate the effects of irrigants and dry canal on the accuracy of electronic apex locator (EAL) in locating simulated root perforations. Material and methods: twenty singlerooted, mandibular premolars were decoronated at CEJ, and the contents were removed with a barbed broach. The canals were instrumented up to a size of 15 K-file. The roots were artificially perforated at 4 mm from the anatomic apex. The actual length (AL) up to the perforation site was determined. The electronic length (EL) of perforations was obtained by Root ZX mini and iRoot in the dry canal and in the presence of 5.2% NaOCl, SmearOff, and 0.9% sodium chloride using a size 20 K-file. The differences between the EL and AL of the perforations were calculated. Statistical analyses using Friedman and Wilcoxon signed-rank tests were used to analyse the data with the level of significance set at p <0.05. Results: there were significant differences in different canal conditions with both Root ZX mini and i Root. Measurements in dry canals were significantly longer for both apex locators (p <0.05). Measurements with NaOCl were significantly shorter for both apex locators (p < 0.05). Both apex locators produced significantly accurate values for Saline and Smear OFF (p < 0.05). Conclusions: in this study, both Root ZX mini and i Root were affected by different canal conditions. The most accurate measurements were seen in the presence of saline and SmearOFF. (AU)

Objetivo: este estudo teve como objetivo avaliar os efeitos de irrigantes e canal seco na precisão do localizador apical eletrônico (EAL) em localizar perfurações radiculares simuladas. Material e métodos: vinte pré-molares inferiores unirradiculares tiveram suas coroas removidas na altura da JEC e o tecido pulpar removido com um extirpa nervos. Os canais foram instrumentados até a largura de uma lima k 15. As raízes foram perfuradas artificialmente a 4 mm do ápice anatômico. O comprimento real (AL) até o local da perfuração foi determinado. O comprimento eletrônico (EL) das perfurações foi obtido pelo Root ZX mini e iRoot no canal seco e na presença de 5,2% de NaOCl, SmearOff e 0,9% de cloreto de sódio usando uma lima K tamanho 20. As diferenças entre o EL e o AL das perfurações foram calculadas. Análises estatísticas, utilizando os testes de sinais por postos de Friedman e Wilcoxon, foram realizadas para analisar os dados com o nível de significância estabelecido em p < 0,05. Resultados: houve diferenças significativas nas diferentes condições do canal, tanto no Root ZX mini quanto no i Root. As medidas em canais secos foram significativamente maiores nos dois localizadores apicais (p < 0,05). As medidas com NaOCl foram significativamente mais curtas para os dois localizadores apicais (p<0,05). Ambos os localizadores apicais produziram valores significativamente precisos para Saline e Smear OFF (p < 0,05). Conclusões: neste estudo, tanto o Root ZX mini quanto o i Root foram afetados por diferentes condições do canal. As medidas mais precisa foram observadas na presença de soro fisiológico e SmearOFF. (AU)

Quantifying OHIP in the Context with Oral Health Literacy in Rural and Urban Population.

AIM: The present study was undertaken to assess the knowledge and awareness of oral health literacy among rural and urban people and to correlate it with the oral health-related quality of life (OHRQoL). MATERIALS AND METHODS: The present study was conducted among the rural and urban population visiting the outpatient department. The study questionnaire was used to assess oral health literacy and these questions were framed based on the various aspects like general demographics, dental visit, and dentition status. A validated questionnaire to record the oral health impact profile (OHIP) was used to assess the quality of life. Further, the rapid estimate of adult literacy in dentistry-30 (REALD-30), the word recognition test, was used to assess oral health literacy. RESULTS: Out of 1,000 participants, 500 were from the urban population and 500 from a rural area. The mean age of participants in the rural and urban population was 32.22 ± 10.66 and 30.43 ± 10.3, respectively. The mean score of OHIP in rural and urban participants was found to be 6.46 ± 6.815 and 6.34 ± 8.492, respectively. The mean score of REALD-30 in rural and urban participants was found to be 12.88 ± 7.214 and 20.9 ± 7.334, respectively. CONCLUSION: Results suggest that dental health literacy have an independent effect on dental health outcomes.

Rugae patterns as an adjunct to sex differentiation in forensic identification.

The aim of the study was to identify the different patterns of palatal rugae and gender differences in rugae pattern in Maharashtra population thereby highlighting the importance of palatal rugae in establishing person's identity. The 600 dental casts of age 18 years and above were included in the study. The rugae were delineated using a sharp graphite pencil under adequate light and magnification and information was recorded about shape, number, size and direction of the palatal rugae. The most commonly noticed rugae among the total study participants primary and secondary. Among the patterns of rugae wavy (92.3%) was most common and significantly more among females. The point (9.8%) type of rugae was the only pattern found to be more in males. It may be concluded that the rugae pattern can be an additional method for post mortem identification in conjunction with the other methods such as visual, fingerprints and dental characteristics in forensic sciences.

Cone-beam Computed Tomographic Analysis of C-shaped Canals and Radicular Grooves in Mandibular Premolars: Prevalence and Related Factors.

AIM: This study aimed to evaluate the prevalence of C-shaped canals and radicular grooves (RGs) in mandibular premolars using cone-beam computed tomography (CBCT) and correlating it with other factors like age, sex, unilateral, and bilateral prevalence. MATERIALS AND METHODS: CBCT images of 242 patients with an age group of 13-70 years were selected from pre-existing database. The prevalence of C-shaped canal and RG was recorded along with variables such as age, sex, and bilateral prevalence. STATISTICAL ANALYSIS: Prevalence was compared using the Chi-square test (p < 0.05). RESULTS: The prevalence of C-shaped configurations in the mandibular first premolars (17.4%) was significantly higher (p < 0.05) as compared with the mandibular second premolars (7.4%). CBCT analysis revealed that in cervical third, 88% of canals were found to be C4 type. A high prevalence of C2 type canal was found in middle (68.6%) and apical third (31.3%). The prevalence of RG in the mandibular first premolars (13%) was significantly higher (p < 0.05) as compared with the mandibular second premolars (4.3%). There was no statistically significant difference between sex and prevalence of C-shaped canals and RG but it was significantly higher in the age group of <50 years (p < 0.05). CONCLUSION: This study showed a high prevalence of C-shaped canals and RG in mandibular first premolars as compared with mandibular second premolars. The prevalence of the C-shaped canal and RG was significantly higher in the age group of <50 years. This knowledge may aid the clinicians for good endodontic prognosis. CLINICAL SIGNIFICANCE: This study result provides valuable insight into the prevalence of C-shaped canal and RG among the premolars which can help clinicians to prevent perforations or root fractures. How to cite this article: Srivastava S, Gaikwad RN, Alsalhi N, et al. Cone-beam Computed Tomographic Analysis of C-shaped Canals and Radicular Grooves in Mandibular Premolars: Prevalence and Related Factors. J Contemp Dent Pract 2019;20(11):1350-1354.

Behavioural perspective of tobacco use among youth of Vidarbha region of Maharashtra state in central part of India / Perspectiva comportamental do uso do tabaco entre jovens da região de Vidarbha, no estado de Maharashtra, na parte central da Índia

Objective: this study was conducted to find out the youth perspective about the use of tobacco and its ill effects. The survey was conducted at a private Engineering college of Nagpur, Maharashtra India. Material and Methods: a cross-sectional study with self-administered modified Global youth tobacco survey (GYTS) questionnaire was used for data collection. Eight hundred nine college students of age group between 17 year-24years were included in this study. The questionnaire comprised of information on socio-demographic characteristics and questionnaire was used to gather data on knowledge, attitude and practices of participants about tobacco use. Data analysis was performed by using chi-square test and Statistical significance was measured at a level of 0.05. Results: out of 806 total participants, 136 (16.8) were current tobacco consumers, significantly high prevalence of tobacco use was observed among boys 106 (13.1) than girls 30 (3.7). Moreover, a higher number of boys 106 (13.1) started smoking at young adolescent age (13- 20 years) than girls30 (3.7). Conclusions: the findings in the study suggest that tobacco use is still an important risk behavior amongst students. Tobacco use was comparatively higher amongst boys though its use is not restricted to them only. There is a need to plan to gather nationwide baseline data on the use of tobacco by young adolescents and the factors associated with initiation of tobacco habit. (AU)

Objetivo: Este estudo foi realizado para descobrir a perspectiva dos jovens sobre o uso do tabaco e seus efeitos nocivos. A pesquisa foi realizada em uma faculdade de engenharia privada de Nagpur, na Índia Maharashtra. Material e Métodos: Foi utilizado um estudo transversal com questionário autoadministrado de pesquisa global de tabaco juvenil modificado (GYTS) para coleta de dados. Oitocentos e nove estudantes universitários de faixa etária entre 17 e 24 anos foram incluídos neste estudo. Utilizou-se o questionário composto por informações sobre características sociodemográficas e para coleta de dados sobre conhecimentos, atitudes e práticas dos participantes em relação ao uso do tabaco. A análise dos dados foi realizada pelo teste do qui-quadrado e a significância estatística foi medida em um nível de 0,05. Resultados: Dos 806 participantes no total, 136 (16,8) eram consumidores atuais de tabaco com prevalência significativamente mais alta entre os meninos 106 (13,1) do que as meninas 30 (3,7). Além disso, um número maior de meninos 106 (13,1) começou a fumar na adolescência (13 a 20 anos) comparado ao número de meninas 30 (3,7). Conclusões: Os achados do estudo sugerem que o uso de tabaco ainda é um importante fator de risco comportamental entre os estudantes. O tabagismo foi comparativamente maior entre os meninos, embora seu uso não seja restrito apenas a eles. Há uma necessidade de planejar a coleta de dados de referência nacionais sobre o uso de tabaco por jovens adolescentes e os fatores associados ao início do hábito do tabagismo. (AU)