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Sa. Miremadi , Ar. Rokn , A. Nikbakht ,
Volume 15, Issue 4 (1-2003)

In the past two decades, replacement of the missing teeth with implant borne prosthesis has become a treatment modality, accepted by the scientific community for fully and partially edentulous patients. The aim of the present study is to evaluate retrospectively, 502 ITI dental implants application, in partial and complete edentulous patients, treated in two private centers, based on clinical and radiographic parameters.One hundred and forty patients, with 502 ITI dental implants, who were treated from 1994 to 2000 in two private centers, were investigated. For such patientsT a minimum of one year and a maximum of six years were passed since prosthesis placement over implants, so they were cooperative subjects. There was a significant relation between implant type and bone loss, so was between the presence and absence of BOP and the rate of bone loss. From totality 502 implants, 6 implants (28%) and 4 implants (1.4%) were lost, in maxilla and mandible, respectively. The total success rate was 98%. This rate, in maxilla with 212 implants was 97.2% and in mandible with 90 implants was 98.6%. The mean value of bone loss (RBL) and periodontal pocket depth (PPD) during 6 years, for the remaning 492 implants were 0.93±0.39mm and 1.99mm, respectively. The results showed that ITI dental implants, with a success rate of more than 97%, can be used as a desirable treatment choice in partial and complete edentulous patients.
Y. Soleimani Shayesteh , Sh. Mohseni Salehi Monfared , S. Eskandarion ,
Volume 19, Issue 3 (6-2006)

Background and Aim: Intrabony periodontal defects are important problems in periodontology and up to now several ways have been suggested for their treatment .Treatment with enamel matrix derivatives (EMD) has been shown to enhance periodontal regeneration. There is limited information available from clinical trials regarding the performance of EMD in the treatment of periodontal intrabony defects. This study was designed to compare the clinical and radiographic effects of EMD treatment to that of open flap debridment (OFD) for two and three walled intrabony defects.

Materials and Methods: 18 patients were included in this clinical trial which have 24 two and/ or three intrabony defects. Defects were randomly divided into two groups (test and control). Defects in test group were treated with flap surgery plus EMD and in control group with open flap debridment. At baseline and at 3 and 6 months follow up, clinical and radiographic measurements were performed. Data were analyzed using Greenhouse-Geisser test with p<0.05 as the limit of significance.

Results: At 3 and 6 months, mean probing pocket depth reduction was greater in the test group (EMD) (4.33 mm and 4.70 mm) compared to the OFD group (2.54 mm and 3.09 mm). Mean values for clinical attachment gain in the EMD group after 3 and 6 months were 4.29 mm and 4.98 mm, and in OFD group were 2.83 and 2.82 mm respectively. Radiographic bone gain measured by radiovisiography technique was greater in the EMD group compared to the OFD group (4.66 mm in EMD and 1.11 mm in OFD group after 3 months and 5.78 mm in EMD and 1.39 mm in OFD group after 6 months).

Conclusion: Based on the results of this study, treatment with flap surgery and EMD compared to open flap debridment, produced more favorable clinical improvements in two and three walled intrabony defects.

R. Haghgoo, F. Mollaasadolla, F. Abbasi,
Volume 22, Issue 2 (11-2009)

Background and Aim: Several agents were used for pulpotomy in primary molars. Formocresol is the most common drug in this procedure. In some studies it has been shown that, this material has potential some side effects, so it is essential to find other alternatives. The aim of this study was to evaluate clinical and radiographic success rates of mineral trioxide aggregate and formocresol.

Materials and Methods: In this randomized clinical trial study, 70 carious primary teeth of 4 to 7-year-old children were pulpotomized, and remaining pulp was dressed with Root MTA and formocresol. The clinical and radiographic follow up evaluations were performed at 6, 12 months by a blind dentist. The data were analyzed by Fisher's exact test.

Results: At the end of 1-year follow-up period, in formocresol group sinus tract and tenderness to percussion were seen in 2 teeth, internal resorption was seen in 1 tooth, and furcation radiolucency was seen in 2 teeth. Clinical and radiographic signs of failure were not seen in any case of (Iranian) Root MTA group.

Conclusion: Based on the results of this study, Iranian MTA can be used for pulpotomy in primary molars.

Sakineh Nikzad, Abbas Azari, Somayeh Niakan, Zeynab Bahrani,
Volume 27, Issue 3 (9-2014)

  Background and Aims: The aim of this review article was to present the information have been published, regarding the functional properties of Zirconia until today.

  Materials and Methods: A review of the literature was carried out in MEDLINE database using key words (Dental ceramic, Zirconia, 3Y-TZP, Clinical performance, Machining and Transformation toughening). These searches were limited to the articles published after the year 2000.

  Conclusion: Despite excellent clinical results in short-term studies, there is still a major need to have more clinical and laboratory long-term information about zirconia restorations.

Majid Akbary, Sanaz Kargozar,
Volume 29, Issue 2 (11-2016)

Background and Aims: Implementation of innovative methods for promoting learning persistence is of high importance. The aim of this study was to introduce an innovative teaching method in preclinical course of restorative dentistry and to investigate its impact on the students’ clinical skills.

Materials and Methods: In our study, which was done at the dental School of Mashhad University of Medical Sciences, the Team Based Learning (TBL) technique was applied. 48 fourth-year students took part in the course optionally. They were divided into four groups and the stages of TBL were performed. At the end of the course, a questionnaire was administered to the students. After passing the clinical course of restorative dentistry, the mean scores of students who had passed the voluntary preclinical course were compared with those of who did not pass this course. Data was analyzed using T-test.

Results: The results of this study revealed that the mean scores of students who had passed the voluntary preclinical course was higher than that of the students who did not pass the voluntary preclinical course (P=0.02). Moreover, the questionnaire showed that 97% of students were satisfied with this course and believed that it was useful for them.

Conclusion: This study showed that the innovative method of Team Based Learning (TBL) could promoted learning along with students’ satisfaction of dental preclinical courses.

Arash Mansourian, Shiva Shirazian, Mohammad Jalili, Mehdi Vatanpour, Leila Pour Momen Arabi,
Volume 29, Issue 3 (10-2016)

Background and Aims: The objective of this study was the development of a checklist for assessment of students’ clinical skills in the clinical oral medicine. The second aim was the assessment of stake holders’ satisfaction of this checklist in comparison to the routine global rating method.

Materials and Methods: The checklist was developed in an expert panel sessions and the validity and reliability of checklist were assessed by CVI and test-retest method, respectively. All students (n=66) were assessed in 2 groups, one with developed checklist and another with global rating. At the end of the session, the satisfaction’s level of staff and students were analysized using Wilcoxon and Mann-Whitney test and the mean scores of students were analysized using Paired T test.

Results: Content validity index (CV I) of checklist was 0.88. Reliability of checklist confirmed with high correlation coefficient (0.9). Staffs’ satisfaction had no significant difference between the two methods
(Wilcoxon P=0.06). The mean score of students who assessed by checklist was higher than global rating with no significant differences (P=0.06).

Conclusion: Regarding the higher students’ satisfaction from checklist and more attention to component of assessment and more objectivity of this method and also higher score in checklist, it seems that the use of a checklist is more proper method for assessing the students’ clinical skills.

Shiva Shirazian, Sakineh Nikzad Jamnani, Maryam Memarian, Homa Shaghi,
Volume 33, Issue 1 (7-2020)

Background and Aims: Due to the very high importance of assessing the clinical performance of students, choosing the best assessment tool and method is one of the most important goals and tasks in medical education. The objective of this study was the development of a checklist for the assessment of dental students’ clinical skills of Tehran University of Medical Sciences, in the clinical complete denture course. The second aim was to determine the validity and reliability of the checklist, and The third aim was the evaluation of raters’ and students’ satisfaction.
Materials and Methods: The checklist was developed in expert panel sessions, and the validity and reliability of the checklist were assessed with CVI (content validity index) test-retest and inter-rater reliability methods, respectively. Students (n=15) were evaluated with a developed checklist. At the end of the session, the satisfaction level of staff and students were assessed. The obtained information was reported descriptively with the expression of mean and standard deviation and in the form of relative and absolute frequencies.
Results: The content validity index (CVI) of the checklist was 0.96. The reliability of the checklist confirmed with a high Intraclass Correlation Coefficient (>0.8) (between 0.82-0.97) (P<0.05). The coefficient of agreement in inter-rater reliability was 0.99 (between 0.991-0.998). Raters’ and students’ satisfaction earned a high percentage of satisfaction.
Conclusion: The designed checklist has the optimal features of a good students’ clinical performance assessment tool; it seems that using this checklist can be an excellent alternative method to a global rating scale to assess the clinical skills of dental students in the complete denture courses.

Sara Ghadimi, Bahman Seraj, , Mohammad Javad Kharazi Fard, Masoud Kiani, Marzieh Salehi Shahrabi,
Volume 35, Issue 0 (5-2022)

Background and Aims: Selecting the appropriate education evaluation method and the effects of this choice according to different fields of medical sciences, is one of the current priorities of medical education. Therefore, the aim of this study was to design a checklist for evaluating the practical skills of dental students and to get compared with the global ranking method.
Materials and Methods: A checklist was developed for the assessment of clinical skills of the practical pediatric course according to an action research method. 32 students were evaluated by the checklist method and 32 students were evaluated by the conventional global rating method (sampling was based on available sample).  Faculty staff and students’ satisfaction regarding the two methods were reported by a 6-scaled measure and statistically analyzed by Wilcoxon Signed Ranks test. The students' scores by the two methods were subjected to paired t test for comparison.
Results: The students were more satisfied with the checklist method (P=0.003). The faculty staff considered a greater ability of the checklist method to differentiate between the students (P=0.03). However, in terms of ease of use and suitability, most faculty staff preferred the traditional method (P=0.02). In other cases, there were no significant differences in the views of students and faculty staff towards the two methods.
Conclusion: In the present study, both Checklist and global rating methods were valuable for evaluation, although due to the greater satisfaction of students and faculty staff with the developed checklist method, the possibility of identifying the weak points leading to decreased scores and better assessment of capabilities, this checklist can be used for evaluation instead.

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