Mansoura Journal of Dentistry

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.

Why choose to publish in the Mansoura Journal of Dentistry

Emerging journal: The journal follows well-planned steps showing promising progress.
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.
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.
Reasonable article processing charge: The Journal is an open access journal. Authors are kindly requested for article processing charge (APC) for their accepted submissions. There is no submission charge. For APC and payment details, please contact the journal.

Current Issue

Volume 13, Issue 1 (2026)View issue

Featured Content

Original Article
1 January 2026
The Use of PEKK versus PEEK in the Fabrication of maxillary definitive Obturators
Mostafa S. Swedan, Sherin F. Donia, Salah AF. Hegazy
Purpose. This study aimed to evaluate the clinical performance of CAD-CAM-milled PEKK frameworks versus PEEK frameworks in the fabrication of clasp-retained maxillary obturators, assessing retention outcomes and patient satisfaction over a sixmonth follow-up period. Materials and Methods. Ten patients with maxillary defects (Armany class I) were randomly assigned to two equal groups (n=5). Group 1 received obturators with CADCAM- milled PEKK frameworks (Pekkton, Cendres+Métaux), while Group 2 received obturators with CAD-CAM-milled PEEK frameworks (Bio-HPP, bredent), both incorporating hollow bulb extensions fabricated from PMMA. A standardized digital workflow including exocad software design, and subtractive manufacturing was employed for all prostheses. Framework retention was measured using a digital forcemeter, and patient satisfaction was assessed immediately, at 1 month, 3 months, and 6 months post-insertion. Statistical analysis was performed using SPSS v25.0 with independent t-tests and chi-square tests (α=0.05). Results. Both materials demonstrated comparable retention values throughout the sixmonth evaluation period, with no statistically significant differences between groups at any time point (p > 0.05). Mean retention values ranged from 12.5-13.5 N across both groups. Patient satisfaction rates were identical (60% satisfied in each group), with no significant difference detected (p=1.000). Conclusions. PEKK and PEEK frameworks show comparable clinical efficiency regarding retention and patient satisfaction in maxillary obturator prostheses. However, PEKK represents a suitable alternative to conventional materials for obturator fabrication based on its superior mechanical profile reported in laboratory analyses.
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Original Article
1 January 2026
Comparative study between high performance polymers versus metallic definitive obturator: A finite element analysis
Mostafa S. Swedan
Aim: This study investigates the mechanical performance of obturators fabricated from PEKKTON, PEEK, and traditional Cobalet-chromium materials using finite element analysis. Methods : One three dimensional finite element model was created for this study. Starting by cast laser scanning to create solid parts of the model "cortical, cancellous, mucosa, obturator, and partial denture" that to simulate restoration of maxillectomy defects. The model was subjected to average masticatory load of 200N distributed on the partial denture vertically and oblique. Results: The results of the three obturator materials showed too similar deformation and stresses distributions with small variation in values. The obturator with highest rigidity and stiffness "CoCr" showed higher resistance to the applied load, specially the lateral component of the oblique load. The acrylic partial denture did not show considerable difference in both total deformation (of order 3.8 and 11.5 micron) nor von Mises stress (about 6.17 and 9.21 MPa) with changing obturators material under vertical and oblique loading cases respectively. Conclusions : Within the study limitations, the obtained results within this study indicated that the three tested materials can be used. PEKKTON and PEEK as obturator materials showed too close results and better performance than CoCr one. That, it will not face failure even with increasing the applied load several times.
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Current Articles

Original Article1 January 2026
Influence of serum vitamin D levels on marginal bone loss around unsplinted mandibular implant overdentures: A retrospective study
Rahma EL Hussany Mohammed EL Desouky, Fatma Ahmad El-Waseef
Objective: To investigate the impact of serum vitamin D levels on marginal bone loss (MBL) in patients restored with unsplinted-mandibular-implant overdentures using LOCATOR attachments. Materials and Methods: Thirty participants rehabilitated with three-implant-mandibular overdentures were included. Based on serum vitamin D at the time of prosthetic loading, participants were categorized into two equal groups: a test group with deficient vitamin D (< 20 ng/mL) and a control group with sufficient levels (≥30 ng/mL). Patients with borderline levels (21–29 ng/mL) were excluded. Peri-implant vertical (VBL) and horizontal bone loss (HBL) were measured at baseline (T0), 6 months (T6), and 12 months (T12). Results: The vitamin D-deficient group exhibited significantly elevated VBL and HBLover the sufficient group at all-time points (P
Original Article1 January 2026
Cephalometric Norms and Sexual Dimorphism in the Tanzanian Population: A Comparative Study with Caucasian and West African Norms
Ali K. Hamad, Ferdinand M. Machibya, Matilda M. Mlangwa, David N. Ngassapa
Objective: This study aimed to establish cephalometric norms for the Tanzanian population, assess sexual dimorphism in cephalometric measurements, and compare these findings with established Caucasian and West African norms to enhance orthodontic diagnosis and treatment planning. Materials and Methods: A crosssectional study was conducted on 309 subjects (142 males, 167 females) at Muhimbili University Dental Clinic. Cephalometric radiographs were digitally traced using Quick Ceph Studio. Reliability was assessed using the inter-class correlation coefficient. The Kolmogorov-Smirnov test checked normality, while one-sample t-tests and Student’s ttests (p < 0.05) were used for comparisons. Data were analyzed with RStudio. Results: Tanzanians showed significantly smaller craniofacial measurements than Caucasians. Males had larger skeletal dimensions than females. Compared to West Africans, Tanzanians had generally higher values, with a few exceptions. Conclusion: Tanzanians display distinct craniofacial characteristics, differing from both Caucasians and West Africans. These findings support the need for population-specific cephalometric norms to guide accurate orthodontic diagnosis and treatment.
Original Article1 January 2026
The mitosis-specific antibody anti-phosphohistone-H3 (PHH3) and its relation to the histopathological and biological characteristics of ameloblastoma and ameloblastic carcinoma
Husam Asadiq S. Alrumayh, Samar Soliman, Khadiga M. Ali, Hoda M Ismail, Azza Abbas El-Sissi
Aim This study aimed to assess the immunohistochemical (IHC) expression of phosphohistone H3 (PHH3) in multicystic ameloblastoma (AB), unicystic AB and ameloblastic carcinoma (AC) and to investigate the mitotic activity difference between these lesions. Material and Methods This study was carried out on 30 cases, classified into three groups Group I 13 cases of multicystic AB. Group II 7 cases of unicystic AB Group III 10 cases of AC. These cases were selected from the Oral Pathology Department, Mansoura University and Cairo University archives from 2023 to 2024. Immunohistochemistry for PHH3 was done and the immunoreactivity was evaluated by the Image Analysis Computer System to determine the percentage of cells positive. Statistical analysis using the Chisquare test to evaluate the significance of the association between categorical variables. One-way ANOVAs were used to compare groups for each variable under study. Results PHH3 immunostaining was positive in all thirty examined cases. Most ameloblastoma cases exhibited low to moderate nuclear reactivity within tumor cells, whereas AC samples demonstrated marked PHH3 overexpression. A statistically significant difference was observed among the groups regarding PHH3 expression. Additionally, patient age showed a significant association with tumor type (p = 0.003), where older age was more commonly observed in AC cases compared to AB. Conclusions findings suggest that PHH3 can represent a reliable marker for evaluating the mitotic activity with differentiating the malignant lesions from benign ones. Also, it can be used as an indicator for aggressiveness and progression.
Original Article1 January 2026
Effect of Zinc Oxide Nanoparticle Coating and Artificial Saliva on the Frictional Resistance of Self-Ligating Ceramic Brackets: An In Vitro Study
Amal Mohammed Al-Hajj Abdo, Reham Ibrahim El-Gazzar, Hagag Mohammed, Ahmed Maher Fouda
Aim: The objective of this research was to investigate how ZnO nanoparticles and artificial saliva influence the frictional resistance in self-ligating ceramic orthodontic brackets while performing sliding mechanics Materials & Methods : A total of sixty maxillary canine brackets were divided into three groups: uncoated self-ligating ceramic brackets, ZnO-coated brackets, and ZnOcoated brackets tested under artificial saliva. The friction produced by sliding was measured using a universal testing machine with a 0.019 × 0.025-inch stainless-steel archwire. One-way ANOVA was used for the statistical analysis, and p-values of ≤ 0.05 were considered significant. Results: The results showed a significant difference in the ZnO-coated brackets when compared to those of the uncoated brackets. The frictional value for the ZnO-coated brackets tested with artificial saliva was the lowest compared with the uncoated group. ZnO coating increased friction, whereas the addition of artificial saliva to the coated brackets reduced friction (p < 0.001). Conclusion: ZnO nanoparticle coatings increased the frictional resistance of selfligating ceramic brackets in a dry state. Artificial saliva significantly reduced friction, showing its effective lubricating role at the bracket–archwire interface.
Original Article1 January 2026
Maxillary Anterior Teeth Replacement with Immediate Dental Implants Utilizing Vestibular Socket Therapy versus Ice Cream Cone Technique
Mohamed Faisal Abd El Raorf Shoeib, Mohammed AbdeL-monem Tawfik, Mohammed Talaat Salem, Ayman Ahmed Mustafa Yaseen
Objective: This study intended to evaluate changes, clinically and radiographically, associated with the immediate placement of dental implants in the maxillary anterior esthetic zone, comparing vestibular socket therapy with the ice cream cone technique. Materials and Methods: The current research included sixteen individuals requiring the replacement of a non-restorable tooth in the maxillary anterior aesthetic zone with an implant. Patients were divided into two groups of equal numbers. In the first group, eight implants were immediately placed utilizing the ice cream cone technique, whereas in the second group, eight implants were immediately inserted using vestibular socket therapy into the maxillary alveolar ridge. Both groups had clinical examinations for implant stability and radiographic assessments for marginal bone loss over a six-month evaluation follow-up period. Results: The results showed insignificant differences in implant stability between the two different groups immediately post-implant insertion, at three months later, and at six months after placement. Yet, the intragroup analysis demonstrated significant discrepancies within each group. For marginal bone loss, no differences in significance were seen after three months of treatment and following 6 months of observation. Conclusions: Vestibular socket therapy and the ice cream cone technique are both viable conservative and aesthetic treatment procedures in the maxillary aesthetic zone, exhibiting similar results.
Original Article1 January 2026
Evaluation of soft tissue response of two different provisional prothesis used for immediate load full arch implant prosthesis. randomized control clinical trial
Mubeen jaafar Imran, Mohammed Hussein raafat abd elfatah, Sally elsayed abdelsameaa, Moustafa Abdou Moustafa Elsyad
Purpose: The study seeks to evaluate the gingival index (GI), probing depth (PD), plaque index (PI) for bar reinforced 3D printed provisional full arch and Milled PMMA (polymethyl methacrylate) provisional full arch prostheses. Materials and methods: This study involves immediate implant placement in completely edentulous mandibles using computer-guided surgery. Patients are selected based on CBCT evaluation, ensuring bone density between D1 and D3. A removable complete denture was first fabricated to restore the occlusal plane. A dual scan technique was used with radiopaque markers for digital planning. Virtual prosthesis planning was performed using Exocad software. A stackable surgical guide was fabricated to assist in accurate implant placement. Six implants were placed in the mandible using guided surgery. Multi-unit abutments were placed and secured on 2 groups: bar reinforced 3D printed provisional full arch and Milled PMMA (polymethyl methacrylate) provisional full arch prostheses. A prefabricated cobalt chromium (Cr-Co) barsupported provisional 3D printed prosthesis and milled PMMA ( polymethyl methacrylate ) are delivered immediately. The patient is followed up for healing and prosthesis adaptation. The evaluation parameters were gingival index, plaque index and probing depth. Results: Initially, no significant differences were found between groups, but by 3 and 6 months, the milled group showed higher plaque, gingival, and pocket depth values, while the reinforced printed group showed the lowest. All groups experienced a gradual increase in these parameters over time, indicating declining oral hygiene. For all groups, plaque, gingival scores, and pocket depth increased significantly over time (P
Original Article1 January 2026
Comparative study between high performance polymers versus metallic definitive obturator: A finite element analysis
Mostafa S. Swedan
Aim: This study investigates the mechanical performance of obturators fabricated from PEKKTON, PEEK, and traditional Cobalet-chromium materials using finite element analysis. Methods : One three dimensional finite element model was created for this study. Starting by cast laser scanning to create solid parts of the model "cortical, cancellous, mucosa, obturator, and partial denture" that to simulate restoration of maxillectomy defects. The model was subjected to average masticatory load of 200N distributed on the partial denture vertically and oblique. Results: The results of the three obturator materials showed too similar deformation and stresses distributions with small variation in values. The obturator with highest rigidity and stiffness "CoCr" showed higher resistance to the applied load, specially the lateral component of the oblique load. The acrylic partial denture did not show considerable difference in both total deformation (of order 3.8 and 11.5 micron) nor von Mises stress (about 6.17 and 9.21 MPa) with changing obturators material under vertical and oblique loading cases respectively. Conclusions : Within the study limitations, the obtained results within this study indicated that the three tested materials can be used. PEKKTON and PEEK as obturator materials showed too close results and better performance than CoCr one. That, it will not face failure even with increasing the applied load several times.
Original Article1 January 2026
The Use of PEKK versus PEEK in the Fabrication of maxillary definitive Obturators
Mostafa S. Swedan, Sherin F. Donia, Salah AF. Hegazy
Purpose. This study aimed to evaluate the clinical performance of CAD-CAM-milled PEKK frameworks versus PEEK frameworks in the fabrication of clasp-retained maxillary obturators, assessing retention outcomes and patient satisfaction over a sixmonth follow-up period. Materials and Methods. Ten patients with maxillary defects (Armany class I) were randomly assigned to two equal groups (n=5). Group 1 received obturators with CADCAM- milled PEKK frameworks (Pekkton, Cendres+Métaux), while Group 2 received obturators with CAD-CAM-milled PEEK frameworks (Bio-HPP, bredent), both incorporating hollow bulb extensions fabricated from PMMA. A standardized digital workflow including exocad software design, and subtractive manufacturing was employed for all prostheses. Framework retention was measured using a digital forcemeter, and patient satisfaction was assessed immediately, at 1 month, 3 months, and 6 months post-insertion. Statistical analysis was performed using SPSS v25.0 with independent t-tests and chi-square tests (α=0.05). Results. Both materials demonstrated comparable retention values throughout the sixmonth evaluation period, with no statistically significant differences between groups at any time point (p > 0.05). Mean retention values ranged from 12.5-13.5 N across both groups. Patient satisfaction rates were identical (60% satisfied in each group), with no significant difference detected (p=1.000). Conclusions. PEKK and PEEK frameworks show comparable clinical efficiency regarding retention and patient satisfaction in maxillary obturator prostheses. However, PEKK represents a suitable alternative to conventional materials for obturator fabrication based on its superior mechanical profile reported in laboratory analyses.

Most Popular Articles

Original Article
1 March 2022
Effect of Different Bevel Designs on Microleakage and Shear Bond Strength of Class IV Composite Restoration: A laboratory Study
Hiran Qadir, Noha EL-Wassefy, Asmaa Abdullah, Hamdi Hamama
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.
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Original Article
1 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
Asmaa Elabd, Marwa Tawfik, Ahmed Hafez
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.
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Original Article
1 January 2023
Comparison between jet injector and traditional needle syringe during infiltration anesthesia in pediatric patients
Heba O. Elbadry, Salwa M. Awad, Hossam E. Hammouda
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.
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Original Article
1 September 2022
Awareness of Evidence Based Recommendations on Toothbrush Bristles Design and Texture among Dentists
Nasr Attia, Ahmed Etman
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.
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Original Article
1 January 2024
Conventional vs compressive implants for supporting immediate loading bar-retained mandibular overdenture: A study of peri-implant tissue health and implant stability
Mohammed H. Karkash, Khaled M. Zahran, Islam H. Kandil, Ahmad A. Habib
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.
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Original Article
1 January 2023
Effect of Different Bar Designs to Retain Implant Mandibular Overdentures on Alveolar Ridge Resorptio
Mohamed shady Nabil, Ayman A. El Kashty, Heba Wageh Abozaed
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.
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