Clinical, Cosmetic and Investigational Dentistry最新文献

Background: Findings show that periodontitis does not affect all populations; similarly, some individuals present risk conditions such as occupational stress, making them more susceptible to developing periodontitis through unhealthy habits like poor oral hygiene and immune suppression. Periodontitis triggers an inflammatory host immune response; "Receptor Activator Nuclear Factor KB ligand (RANKL)" is the primary regulator of osteoclast differentiation and activity. It was found that osteoclastic bone damage caused by periodontitis depends on the RANKL produced by osteoblastic and periodontal ligament cells.

Objective: This study aimed to assess the effect of occupational stress on employees with periodontitis using salivary RANKL marker.

Material and methods: A case-control analysis was done at my clinic with 90 male employees aged 30-50. The participants completed self-administered questionnaires and had periodontal exams. Employee occupational stress was estimated using a life events scale questionnaire. Calibrated dentists performed the parameters used in the periodontal assessment after collecting whole unstimulated salivary samples from each employee to measure salivary RANKL using ELISA technique.

Results: The present finding revealed a statistically significant difference among groups in "probing pocket depth, plaque index, bleeding on probing, clinical attachment level, and salivary RANKL level". They were higher in the stressed employees' group, which is not statistically significant.

Conclusion: The findings of this investigation observed that occupational stress increased clinical periodontal parameters and salivary RANKL of periodontitis in employees.

Purpose: Compression necrosis refers to bone tissue damage that can occur when excessive pressure or force is applied to surrounding bone during implant placement. This pressure can compromise blood supply to the bone, leading to necrosis. Compression necrosis is a concern, because it can affect the stability and long-term success of dental implant.

Patients and methods: This case report highlights a case of early bone loss and implant failure possibly due to compression necrosis. Clinical data, photographs, radiographs, blood examination report and histology were presented to document the early failure of an implant placed in the mandibular left posterior region of a 33-year-old female patient.

Results: Radiograph taken six weeks after implant placement showed severe angular defect. Therefore, the implant was surgically removed. Histological examination of the area showed bony trabeculae with an absence of osteoblastic riming, suggestive of necrotic bone.

Conclusion: Using excessive torque values when placing implants in dense bones can increase the risk of implant failure due to bone over compression. Dental professionals must follow the manufacturer's instructions and employ quality surgical techniques during implant placement into dense cortical bone to minimise risks.

Background: Oral health is crucial for overall well-being and systemic health and Humans are exposed to several bacteria after birth and will causes systemic illnesses like septicemia, respiratory, gastrointestinal, and renal issues. This study aimed to evaluate undergraduate students' knowledge, attitudes, and practices regarding toothbrush contamination and disinfection.

Methods: A descriptive cross-sectional study was carried out with undergraduates from seven selected universities, including public and private universities. A closed-ended questionnaire containing 24 items was distributed to A total of 490 undergraduate students.

Results: The study showed that (28.6%, n=140) had knowledge about toothbrush cleaning and disinfection. A total of (350, n=71.4%) needed to gain knowledge about toothbrush cleaning and disinfection. Fifty-two percent of the students feel that bacteria are the primary mode of toothbrush contamination. Many of the students had different ways of disinfecting toothbrushes, including, boiling a small pot of normal water (51.4%, n=252), chemical agent (31.8%, n=156), ultraviolet sanitizer (0.2%, n=4), and microwave radiation (0.2%, n=1) does not know (16.1%, n=79). Most students (76.9%, n=377) felt that toothbrush disinfection was necessary.

Conclusion: Fewer students have sufficient knowledge about toothbrush contamination and practice disinfection methods, whereas most students need to be made aware of the contamination of toothbrushes and the use of disinfectant methods.

Objective: The aim of this survey was to investigate the main reasons for extraction of permanent teeth, and its correlation with age, gender, education level, smoking habits, and time of last dental visit, family income, and professions in Kabul, Afghanistan.

Subjects and methods: The study proposal was approved by Research Ethics Committee of Khatam AL Nabieen and was conducted over a period of 5 months; its population consisted 594 patients, aged 10-70 years, who underwent extraction. The frequency distribution was calculated using X² test, ANOVA and t-test for differences in mean number of patients.

Results: A total of 594 patients underwent extraction. The highest rate (53.8%) of extraction occurred for those 21-40 years old. Females compromised 51.3% of patients. Two hundred (33.6%) patients were uneducated. Tooth loss due to caries was 30.1%; patient-request was 18.3%; impacted teeth was 14.4%. Other causes were periodontal reasons, failed root canal therapy (RCT), Tooth mobility, and Root fractures.

Conclusion: The result of this survey indicated that caries, patient request, and impaction were the leading reasons for tooth extraction. The majority of patients were uneducated, and had insufficient family income. Most of the patients were housewives and laborers.

Background: This simulated study of 30 severely curved L-shaped root canals aimed to compare preparation time, aberrations, width measurements, and fractured files of three nickel-titanium (Ni-Ti) files, namely, ProTaper, ProTaper Next (PTN), and WaveOne (WO).

Methods: Thirty simulated L-curved root canals of resin blocks were randomly divided into three groups. The canals were prepared to a tip size of 25 using ProTaper, PTN, and WO rotary file systems. Pre- and post-operative views for each sample were captured by a professional camera at a standardized distance and position. Blue India ink was injected into the pre-operative canals, and red India ink was injected into the post-operative canals to give a clear superimposition image. Five points were assessed through the halfway of the canal to the orifice (area between the beginning of curvature and apical end point). Preparation time, aberrations, width measurements, and fractured files were recorded and analyzed.

Results: Mean preparation time was longest in ProTaper (4.89±0.68 minutes). PTN and WO were the fastest in preparing the canals (about 3 minutes). A statistically significant difference was found between WO and ProTaper & PTN and ProTaper (p=0.000), while the difference was non-significant (p > 0.05) between WO and PTN. Nine aberrations consisting of three zips, one ledge and one outer widening were related to ProTaper, while WO recorded a ledge and fractured file, but for PTN system, it verified an outer widening and ledge. Only one WO file fractured, with no deformation observed in the other instruments. No significance was recorded among the width measurements in the different levels.

Conclusion: ProTaper next achieved faster cutting than the ProTaper and WO file systems. PTN maintained the best apical termination position and produced the least canal aberration, followed by WO and ProTaper.

Background: Numerous investigations have revealed that oral issues are quite common among young Afghans. Knowledge, attitudes, and behavior are the three oral health-related population dimensions that need to be assessed in order to design effective public health awareness programs.

Objective: The study's goal was to find out how much health professions' students at Kabul University of Medical Sciences knew about oral health, as well as their attitudes and behaviors toward dental health and oral hygiene routines.

Materials and methods: From September 2022 to December 2022, cross-sectional research was conducted at Kabul University of Medical Sciences. A total of 496 health professions' students (312 females and 184 males) aged 18-25 years old from 5 colleges of health and medical-related disciplines were addressed. All participants were given a thorough questionnaire with 30 amended items modified from Peterson et al and Stenberg et al.

Results: 44.5% (n=220) of the participants brushed their teeth twice per day, 41.3% (n=204) once per day, and 9.31% (n=46) more than twice per day, while just 4.7% (n=23) cleaned their teeth less than once per day. Surprisingly, the majority of participants (91% or n=451) were aware of the significance of routine dental visits, and 51.3% (n=252) of participants reported visiting the dentist while they experienced pain. 94% of students were of the opinion that brushing their teeth prevents dental decay. 93% (n=461) of them agreed that using fluoride strengthens teeth, and 96% (n=476) said that sweets are bad for teeth.

Conclusion: Oral health knowledge, attitudes, and behaviours are related to an individual's level of education. Female and generally dental professions' participants, rather than other health professions participants, were more likely to be concerned about their oral health than male participants.

Background: Several factors are associated with coronal and root caries in older persons. The purpose of this study was to determine the experience, prevalence, and risk indicators (socioeconomic, sociodemographic, and dental variables) of coronal and root caries in older persons residing in nursing homes in Mexico.

Methods: A cross-sectional study was carried out in 227 dentate participants with natural teeth. Convenience sample, where all dentate residents were invited to participate. The dependent variables were coronal caries and root caries, which were determined through an oral clinical examination. The independent variables were sociodemographic factors, location, type of center, surfaces free of dental biofilm and calculus, surfaces with recession, retainers in contact with surfaces with recession, xerostomia, smoking, and the previous use of dental services. The binary logistic regression model was used in the analysis.

Results: The mean age of the participants in this study was 77.7±8.8 years, and 69.2% were women. Moreover, 71.8% live in long-term care facilities, and 48.0% live in Mexico City. The prevalence of coronal and root caries was found to be 67.8% and 50.7%, respectively. Being male and living in Mexico City were risk indicators for coronal caries, and with a 1% increase in surfaces with no biofilm, the risk decreased by 2%. Being widowed, having government or no social security, denture retainers, and coronal caries were risk indicators for root caries, while the utilization of dental services indicated lower risk.

Conclusion: Several variables that differ in nature were found to be risk indicators for coronal and root caries. Coronal caries increases the risk of root caries. Prevention should be aimed at identifying persons at higher risk, and dental care should be improved for persons living in long-term care institutions.

Purpose: Studies show that Teledentistry helps enhance communication between dental peers and patients and improves time management and education. The knowledge and awareness of Teledentistry levels need to be measured for a wider adaption. This study aimed to explore the knowledge and awareness of Teledentistry among dental practitioners and patients who live in Jeddah City, Saudi Arabia.

Patients and methods: This study is a descriptive cross-sectional study with two participant groups. It uses five-point Likert-type quantitative, valid, and reliable questionnaires, one for dental providers and one for patients. The providers' questionnaire covers four domains: (1) Teledentistry system effectiveness to improve practice, (2) Teledentistry system usefulness for the dental practice, (3) Teledentistry system usefulness for patients, and (4) Concerns about confidentiality and security of Teledentistry. The patients' questionnaire covers two domains: (1) Patients who have previous experience in Teledentistry and (2) Patients who did not have previous experience in Teledentistry. The Institutional Review Board (IRB) approved this study and distributed it at teaching, governmental hospitals, and private dental clinics. Convenience and snowball sampling were used to collect responses. All consent forms have been collected from the participants.

Results: A total of 512 responses were collected using Google Forms, 203 from the dental healthcare provider and 309 from the patients. The collected data were coded and analyzed using Microsoft Excel and SPSS. More than 60% of dentists believe in the worth of Teledentistry, which helps patient education, monitors patients' conditions, and improves the services provided to patients in remote areas. Also, more than 70% of patients believe that Teledentistry can significantly save time and money, and more than half wish that Teledentistry be applied to all hospitals.

Conclusion: Dentists and patients generally showed optimism and support for the Teledentistry concept, in addition to how Teledentistry can be beneficial for both dentists and patients.