Original Article
1 January 2025
Mansoura Journal of Dentistry (MJD) is the official publication of the Faculty of Dentistry – Mansoura University, Egypt. It is is a peer-reviewed journal published quarterly since 2014. The journal uses English as its official language.
Mansoura Journal of Dentistry is honored by the contributions of eminent international editors and reviewers.
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Rapid peer review process: The journal adopts a double-blind peer review process. The first decision may take from 3-4 weeks while the final decision may be reached within 6-8 weeks.
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Current Issue
Volume 12, Issue 4 (2025)View issue
Featured Content
- Original Article1 January 2025
Effect of different implant designs on primary stability in different substrates
Objective To clarify whether implant macrodesign has any influence on primary stability. Implant primary stability was evaluated in different substrates (fresh cow ribs and polyurethane artificial bone blocks) using several methods. Materials and Methods A total of 36 titanium dental implants (3.5 mm × 10 mm) and then divided into 3 groups (n=12): implants have trapezoidal thread design, implants have buttress thread design and implants have reverse buttress thread design were inserted in two different substrates (six fresh cow ribs and eighteen polyurethane casts). Immediately after insertion of dental implant, the implant stability was measured using three different methods (insertion torque, Periotest and AnyCheck device). Results The results of insertion torque, Periotest and AnyCheck device showed that the dental implants with trapezoidal thread design exhibited the highest primary stability in both cow rib and polyurethane substrates. In contrast, the results showed that the dental implants with a buttress thread design, showed the lowest primary stability in both cow rib and polyurethane substrates. Also, there was a significant difference in primary stability between the two substrates. Primary stability was consistently greater with polyurethane casts than with cow ribs. The results showed a significant interaction between implant design and substrate type, suggesting that the efficacy of each implant design differed according to the substrate. Conclusions Implant macrodesign has marked effect on primary stability in different substrates, which is essential prerequisite for osseointegration.
Current Articles
Most Popular Articles
- Original Article1 March 2022
Effect of Different Bevel Designs on Microleakage and Shear Bond Strength of Class IV Composite Restoration: A laboratory Study
Objective: This laboratory study was conducted to evaluate the effect of different bevel designs (2mm bevel, skirt bevel and scalloped bevel) on microleakage and shear bond strength of class IV composite restorations. Materials and Methods: Sixty extracted human permanent maxillary central incisors were selected and a standardized mesio-incisal fracture was created. Teeth were divided into 3 groups (n=20) according to different bevel designs (2mm bevel, skirt bevel and scalloped bevel). All prepared teeth were restored with nano hybrid composite (Filtek Z250, 3M ESPE, St. Paul, MN, USA). Half of specimens were used for microleakage test, specimens were received 3 layers of nail polish, except for a 1 mm around the margins, then immersed in a 0.5% methylene blue dye for 24h. Dye penetration scores were assessed using stereomicroscope. The remaining teeth were utilized for shear bond strength test after measuring the surface area with (Image J) software, specimens were subjected to universal testing machine with crosshead speed of 1 mm/min. Results: Regarding microleakage, the result of Chi-Square test revealed that there was no significant difference between different bevel designs (p>0.05). Regarding shear bond strength the results of one-way ANOVA revealed the highest mean value for the 2mm bevel (16.74±5.29Mpa), while the lowest mean value recorded for the skirt bevel (12.20±1.54Mpa). Conclusion: Bevels can be advantageous in reducing microleakage and increasing shear bond strength in class IV restoration. However, the higher shear bond strength and minimum microleakage can be obtained with 2mm bevel, and it can be recommended for cliniciansn. - Original Article1 September 2022
Evaluation of The Effects of The Incisal Capping Twin Block on The Flaring of The Lower Incisors in The Treatment of Skeletal Class II Malocclusion
Objective: The purpose of this research was to evaluate the effect of the incisal capped Twin Block on the proclination of the lower incisors in the treatment of skeletal class II malocclusion. Materials and Methods: Ten patients (age ranged from 9 to 14 y) with skeletal class II due to mandibular retrusion were selected and treated with the incisal capped Twin Block appliance. Overjet was more than 4 mm. Lateral cephalometric radiographs, photographs, and study casts were obtained before and after treatment. The collected data were analyzed using (SPSS) program for Windows (Standard version 26). The treatment duration was about 8-12 months. Results: Incisal capped TB appliance had Dento-skeletal and soft tissue effects including non-significant effect on the maxillary growth, significant advancement of the mandible, increase in the posterior and total anterior facial height, decrease in the overjet and overbite, retroclination of the upper incisors, significant proclination of the lower incisors and improvement of the soft tissue profile. Conclusions: The incisal capped Twin Block appliance was effective in the correction of skeletal class II patients. It produced a combination of skeletal and dental effects by forward movement of the mandible, palatal tipping of the upper incisors and labial flaring of the lower incisors. The addition of the acrylic capping to the lower incisors did not control the position of the lower teeth and did not prevent their labial flaring. - Original Article1 January 2023
Comparison between jet injector and traditional needle syringe during infiltration anesthesia in pediatric patients
Objective To evaluate the pain level during infiltration anesthesia with needle free jet injectors in pediatric patients. Method 38 cooperative healthy child aged 4–7 years were selected to be anesthetized with both methods of injection, the needles jet injector and the conventional infiltration technique. The selected group was divided randomly into two groups of 19 child each, control group I (conventional needle) and study group II (jet injector). The pain levels were measured according to Wong-Baker Faces Pain (Rating) scale (WBFPS), to determine the level of acceptance of each method. The measuring of the pain level was done after administration of anesthesia with the help of parents, each child selects the score which determine his/her own experience. Results Jet injector showed a lower significant level of pain during infiltration anesthesia in children (P Conclusions Jet injector method is more accepted than traditional infiltration needle technique during infiltration and it promises to be a good alternative to needle injection during anesthesia in children. - Original Article1 January 2024
Conventional vs compressive implants for supporting immediate loading bar-retained mandibular overdenture: A study of peri-implant tissue health and implant stability
Objective: This study was aimed to compare two implant design concepts used to assist immediately loaded mandibular complete overdenture as regards to the implant stability and peri-implant soft tissue health. Materials and Methods: Forty-four healthy fully edentate patients were chosen. Patients received conventional complete dentures and randomly divided into; Group I: with four conventional implants. Group II: with four compressive implants. For all patients, implants installed in the inter-foramina areas and were immediately loaded with mandibular complete overdenture containing metal framework housing three clips and retained by implant screwed titanium bar. Implant stability was measured by Periotest® and the tissue health was assessed in regards to modified gingival index (MGI) and pocket depth at T0, T6 and T12. Analysis of modified gingival index scores done by the Mann-Whitney U test. Analysis of implant stability and pocket depth scores done using repeated measures ANOVA test (P Results: No significant difference (PPP Conclusions: Compressive implants provided higher implant stability and lower pocket depth measures compared to the conventional implants. The compressive implant could be considered a promising implant design for immediate loading protocol. - Original Article1 September 2022
Awareness of Evidence Based Recommendations on Toothbrush Bristles Design and Texture among Dentists
Objective: Dental plaque is a necessary etiologic factor in the onset and progression of dental caries and periodontal disorders. Numerous individual and material-based factors have an impact on dental plaque control. In light of the most recent evidence-based guidelines, this study's purpose is to determine the best toothbrush bristles surface plane design (flat; multilevel; angled), texture (soft; medium; hard) and to estimate how many dentists are aware of that too. Materials and Methods: This is a one-question survey directed on social media platforms of dentists' groups: - “Is it preferable to use a toothbrush with soft or medium bristles, and are toothbrushes with multi-level or angled bristles better than traditional flat bristles for brushing the teeth?”. The answers or reactions were limited to the first valid 400 answers. Results: Comparing the bristles texture (soft & medium) and bristles design (straight & multilevel or angled) showed a statistically significant difference (p ≤ 0.05). Also, there was a statistically significant difference between combining effects taking this descending order soft &multilevel, medium & straight, medium & multilevel and finally soft & straight. Conclusions: Premium toothbrushes based on scientific research with soft, multilevel, or angled bristles were used more frequently by dentists than ones with medium or straight bristles. - Original Article1 January 2023
Effect of Different Bar Designs to Retain Implant Mandibular Overdentures on Alveolar Ridge Resorptio
Objective: To evaluate and compare both anterior and posterior area indices of two different bar attachments bar-locator & bar-clip that are used to retain implant mandibular overdentures. Materials and methods: sixteen completely edentulous participants were eligible (mean age is 50 years old). Every participant received new maxillary and mandibular conventional dentures. After 3 months of adaptation, 2- dental implants were inserted in mandibular canine regions. All participants were randomly divided into 2- equal groups; eight patients received bar-locator attachment (group I) and eight patients received bar-clip attachment (group II). Anterior area index (AAI) and posterior area index (PAI) was performed using a panoramic radiograph (AutoCAD® software) at the time of insertion (T0) and after 5 years of insertion (T5). The data were collected and analyzed by independent t-test and paired t-test. Results: For both groups at both times (T0 & T5); there was a significant difference in anterior maxillary bone resorption for group I (p=0.012) while in group II (p≤0.001). Furthermore, Posterior mandibular bone resorption showed a significant difference in both groups (p=0.002) with an increased amount of bone loss in group II than in group I. Conclusion: it was shown that 2-implant mandibular overdentures retained by bar-clip attachment expressed higher values of mandibular posterior and maxillary anterior bone resorption compared to 2-implant mandibular overdentures retained by bar-locator attachment.