Variability in crown root morphology of teeth is an important consideration in attainment of an esthetic, functional and stable Class I incisor relationship. The size and shape of the crowns of teeth appear to be under moderately strong genetic control. This holds overall crown diameters, crown structures, and crown components. In contrast, root form seems to be fairly susceptible to local environmental factors. Bryant et al. [1] pointed out that there are variations in morphology among maxillary central incisors. In a study by Harris et al. [2] on crown root relationship of maxillary central incisors concluded that normal collum angles (about 0°) are found in Class I, Class II Division 1 cases where eruptive path of upper incisors is guided into an appropriate overjet relationship by tongue pressure and the lower incisors on lingual surface and lip pressure on the buccal. Large collum angles are frequently found in two situations. One, in Class II Division 2 cases where enhanced lip pressure or some other imbalance causes the erupting central incisors to be linguoverted. In Class II
Introduction: It is necessary for patients to have awareness about the usage of implants, and for this reason, it is essential to have communication that is both effective and appropriate.Patients who are receiving treatment in a hospital setting will be surveyed to determine their level of awareness and understanding of dental implants as a potential method of therapy to replace lost teeth.Materials and methods: A standardised self-explanatory questionnaire, which was written up and handed out in a hospital setting. During their regularly scheduled dental appointments, the patients were given the questionnaires to fill out. In all, there were 450 individuals that participated in this poll.Results: The findings revealed that 62.5% of patients have some prior information about dental implants. The majority of the sample (35%) received the majority of their knowledge on dental implants from their friends and family, while the remaining 30% received the most of their information from dentists. In 87.5% of the instances, patients were discouraged from getting implants due to the fact that they were concerned about the cost effectiveness.Conclusion: The awareness and understanding regarding dental implants in the respondents was satisfactory, according to the findings of a study that was conducted on a representative sample of dental patients in Hyderabad, India. Patients still need more comprehensive and precise information regarding this most recent therapy approach, which should be provided to them as soon as possible.
Root canal obturation during endodontic therapy supports the root canal space and helps the extra tooth structure resist fracture. Some believe endodontic-treated teeth are more likely to break than natural teeth. The most common causes of tooth decay are endodontic treatment's extensive tooth structure loss and coronal and radicular dentin drying. Materials and methodsTwo hundred removed human permanent mandibular first molars were allowed to be stored in isotonic saline solution for a maximum of 72 hours. The collection, storing, sterilizing, and handling of the samples were done per the Occupational Safety and Health Administration (OSHA) and Centers for Disease Control and Prevention (CDC) guidelines. Out of a total of 200 newly removed mandibular first molars, 120 teeth were finally gathered, sterilized, and kept in 1% thymol in normal saline at 30 degrees Celsius. The access cavity was prepared, and the pulp chamber was cleaned and debrided using an ultrasonic scaler tip while being irrigated with regular saline. A digital radiograph was taken after a 6# K file was placed to the working length in the mesiobuccal canal. Based on their weights, the samples were dispersed equally across the six groups (n=20). They looked inside them to ensure that the root morphology was normal and that the canal was open and free of any abnormalities, damage, or fillings. They looked at the curvature of the mesial root and chose samples with a curvature of 20-35 degrees. The mesial roots were dissected, labeled, and put in a different location. ResultsOverall, the experimental group's incidence of buccolingual fractures was 55%, making it the most prevalent fracture type. The mesiodistal type of fracture had a 35% incidence rate, which was the second most prevalent. We found that comminuted and transverse fractures occurred in only 15% and 5% of patients, respectively, of all fractures. Both the test and the control groups had a disproportionately high number of buccolingual fractures. When comparing the root fracture loads of the two experimental groups, there was no significant difference (p>0.05) ConclusionWithin this study's restrictions and standardization techniques, it can be concluded that the single file system-prepared roots' resistance to fracture was comparable to that of the control group. It is recommended to conduct additional research on these single file systems using different metrics and to assess them in a clinical setting.
Background And Objectives: There are the rising demand for esthetic orthodontic appliances and wires such as braided and co-axial wires. The effect of prophylactic agents on these relatively newly introduced arch wires are scarcely reported. Hence this study was undertaken to assess the effects of prophylactic uoride agents (1.Acidulated uoride agent (Phos-ur gel), 2. Neutral uoride agent (Prevident 5000)on the mechanical properties of non-coated Nickel-Titanium orthodontic wires and compare it with coated esthetic Ni-Ti wires and braided Ni-Ti wire. Materials And Methods: Total of 270 specimens of rectangular orthodontic nickel titanium arch wires were selected for this study and divided into three groups. All the three groups of wires (30 each) were immersed in 5 ml of articial saliva in plastic vials for 2 months (control). No uoride agents were used in sub-group a. Sub-group b and sub-group c samples were subjected to application of Phos-ur gel and Prevident 5000 respectively, one minute daily for 2 months. All the wires were tested for mechanical properties. Results: The results of the study showed that the mechanical properties of all the three groups of wires were affected by both acidulated uoride agent (Phos-ur gel) and neutral uoride agent (Prevident 5000). Conclusion: The study results proved that uoride prophylactic agents (mouthwash or gels) reduce the arch wire properties during orthodontic treatment.
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