7 research outputs found
Tanzanian Population’s Perspective on Facial Profile Esthetic Preferences
No full textConclusions: The most preferred profiles among the Tanzanian population were the male profile with a mandibular retrusion (M1) and the female straight profile (F4)
Effects of bone regeneration materials and tooth movement timing on canine experimental orthodontic treatment
No full textABSTRACT
Objectives:
To evaluate the effects of bone regeneration materials and orthodontic tooth movement (OTM) timing on tooth movement through alveolar bone defects treated with guided bone regeneration (GBR) utilizing xenografts (Bio-Oss) and alloplast (β-TCP).
Materials and Methods:
Twenty-four standard alveolar bone defects in six male beagle dogs were treated by GBR using either Bio-Oss or β-TCP (experimental), whereas the control defects were left empty. The defects were further grouped into early or late subgroups, depending on OTM timing after GBR (ie 1 month or 2 months, respectively). Rates of OTM were measured intraorally, while computed tomography scan images were used to assess bone density, alveolar bone height, second premolar displacement, and tipping tendency.
Results:
Generally, the Bio-Oss early and Bio-Oss late subgroups recorded the lowest amount of tooth movement compared with other modes of GBRs assessed. Before OTM, the control group registered significantly lower bone height compared with the Bio-Oss and β-TCP groups (P < .01). The control group was inferior on bone density and bone height compared with Bio-Oss and β-TCP.
Conclusions:
The Bio-Oss group had favorable radiologic features (higher alveolar bone level and bone density with less premolar tipping) but showed slower OTM than the control group. The late OTM subgroup had favorable radiologic features and showed faster tooth movement than the early OTM in the β -TCP group.
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The Clinical effectiveness of sequential treatment of skeletal class III malocclusion among patients with maxillary retrognathism at Jilin University Stomatological Hospital, China
Get PDFAim: To assess the dentofacial changes induced by the sequential treatment in the skeletal class III malocclusion with maxillary retrognathism. Study design: Controlled clinical trial assessing the effectiveness of sequential treatment of skeletal class III malocclusion. Materials and Methods: The treated group consisted of 30 patients in pre or during pubertal growth with anterior crossbite, maxillary crowding and class III molar relationship treated with maxillary protraction therapy; Pendulum appliances to distalize molars followed by fixed appliances. The treated group was compared with a control group of 10 untreated Class III subjects. Cephalometric analysis and Paired sample t test and Independent sample t test were used to evaluate the changes and treatment effects. The significance level was set at p ≤ 0.05. Results: After the sequential treatment, the maxilla moved forward, the mandible rotated clockwise leading to improved maxillomandibular sagittal relationship. The upper incisors moved forward, the anteroposterior relationship improved, and the class III concave profile turned to straight. The cephalometric variables; SNA, MP/SN and U1/SN showed significant changes at p ≤ 0.001, p≤ 0.01 and p≤ 0.01 respectively. Conclusion: The sequential treatment approach is effective for skeletal class III malocclusion with maxillary retrognathism for low and average mandible angle young patients
Cephalometric Characteristics of Various Ethnic Groups in Tanzania
No full textConclusion: The findings indicate that Tanzanian adults display distinct craniofacial characteristics, including a more convex facial profile, increased lower lip protrusion, dental proclination, and notable ethnic and intergroup variations
Oxygen Saturation in Primary Teeth of Individuals With Sickle Cell Disease and Sickle Cell Trait
No full textPURPOSE: To determine oxygen saturation in the pulp of primary teeth in children with sickle cell disease (SCD) and sickle cell trait (SCT) for establishing the usefulness of pulse oximetry in screening and monitoring of SCD or therapy. MATERIALS AND METHODS: A cross-sectional study among 30–60 months children with sickle cell disease (SCD) and sickle cell trait (SCT) compared with healthy children (HbAA). A pulse oximeter (BCI 3301) recorded oxygen saturation on six anterior primary maxillary teeth and on index fingers. Data were analyzed using SPSS version 20.0. Mean oxygen saturation for teeth and fingers was calculated. Comparison of Mean across groups was done using post hoc analysis in one-way ANOVA (Bonferroni test). Pearson correlation coefficient was calculated for mean oxygen saturation on fingers and teeth. Level of significance was set at 0.05. RESULTS: Altogether 360, 102, and 96 teeth were examined from children with SCD, SCT, and HbAA respectively. 53% of participants were girls. The mean age of participants was 46.3 months ± 9.4 SD. Low mean oxygen saturation (77.5%) was recorded from teeth of children with SCD relative to those with SCT and HbAA (>86%; P = 0.00). There was no statistically significant difference in oxygen saturation on teeth between children with SCT and HbAA. The mean oxygen saturation on fingers was found to be above 97.2% regardless of sickle cell status. There was no correlation between oxygen saturation on teeth and fingers. CONCLUSION: Pulse oximeter detected a lower oxygen saturation in dental pulp of primary teeth of participants with SCD (HbSS) relative to those with SCT (HbAS) and HbAA. Oxygen saturation on fingers remained unaffected regardless of sickle cell disease status. Although more studies are needed, our study shows that when other conditions affecting peripheral tissue oxygen delivery are ruled out, the low pulse oximetry in primary teeth may be indicative of SCD. The oximeter may also be useful in monitoring response to SCD therapy targeted at improving oxygen carrying capacity and delivery
Orthodontic mini-implants: A systematic review.
Get PDF AbstractPurposeTo compile and analyze the literature regarding orthodontic mini-implants (MIs) placement, clinical applications, success rate, adverse effects and patients’ pain experience in clinical practice.MethodologyPublications about orthodontic MIs variables were systematically searched from PubMed, Science Direct, and Google Scholar Beta electronic data bases using “orthodontic in conjunction with implant, microimplant, screw, miniscrew, screw implant, mini-implant, and temporary anchorage” as keywords. Data from selected articles were extracted and compiled to produce a summarized report. ResultsSeveral areas are suitable for MI placement. However; the region between second premolar and first molar is the safest. The MI success rate ranges from 77.7% to 93.43%. The pain associated with MIs is far less than tooth extraction and significantly lower than patients’ expectation. Root resorption is among the adverse effects and gonial angle pattern influences the MI success rate. ConclusionMIs offer a wide range of clinical anchorage application due to their minimal anatomical location limitation. The success rate of MI is reliably high. The pain caused by orthodontics MI is significantly lower than patients’ expectation.  
Evaluation of knowledge, experience and preparedness on management of medical emergencies among dental practitioners in Dar es Salaam, Tanzania
No full text Background: Some life-threatening medical emergencies do occur in dental setups. Hence, timely diagnosis and prompt management of these conditions by skilled dental practitioners can save lives of patients. Aim: To evaluate the dental practitioners' knowledge, experience and preparedness regarding medical emergencies on dental chair. Methods: Cross section descriptive survey involving 105 public and private dental practitioners in Dar es Salaam City. Pre-tested structured questionnaire gathering information pertaining to socio-demographic characteristics, experience on medical emergencies, knowledge on management of medical emergencies and preparedness for managing medical emergencies was used as a data collection tool. Results: Out of 105 participants (34, 32.4%) reported to have encountered one or more medical emergencies during the past four years. Syncope (23.8%), hypoglycemic attacks (12.4%), and post extraction bleeding (10.5%) were the most reported encountered medical emergencies by the participants. Knowledge on emergency drug kit and the confidence during using/administering the drugs and equipments was low. Medical emergencies trainings were undertaken by 15.2% respondents: However, all of them had a desire for further medical emergencies training. Conclusion: The study revealed that syncope is the commonest medical emergency event. Dental practitioners had a superficial knowledge of medical emergencies, drugs and equipments.  
