Rana Abd El-Sattar Omar Ramadan, Soad Abd El-Moniem Abd El-Moniem And Rasha Adel Ragab,

ABSTRACT


Aim: To Assess The Efficiency Of Oral Health Education Program On Oral Health Knowledge, Attitude, Practice And Oral Hygiene Status Among 12-14-years-old Preparatory Schoolgirls In Ras-Sed, South Sinai, Egypt. Methodology: A Before And After Study Was Conducted Among (n= 260) School Girls In Four Preparatory Schools In Ras-Sedr, South Sinai, Egypt From September 2019 To December 2019. Before The Oral Health Education Program (OHEP), The Girls Were Assessed For Their Oral Health Knowledge, Attitude And Practice (KAP) Using A Self-administrated Questionnaire And Their Oral Hygiene Status Was Assessed Using Oral Hygiene Index Simplified (OHIS). Oral Health Education Program Was Then Provided Using Tailor Made Posters And Audiovisual Aids. Follow-up Was Performed After 3 Months Using The Same Questionnaire And Oral Hygiene Index Simplified Was Recorded After That.

Results: It Was Found That Before Oral Health Education Program, Knowledge Of The Girls Was (57%), Attitude (73%) And Practice (33%), After Oral Health Education Program The Knowledge, Attitude And Practice Of The Girls Improved To (74%), (76%) And (37%) Respectively. Mean ? SD Of (OHIS) Was (1.05?0.36) Before Oral Health Education Program But Unfortunately It Increased To (1.49?1.53) After Oral Health Education Program.

Conclusions: The Oral Health Educational Program Improved The Girl?s Knowledge, Attitude, And Practice But More Efforts Should Be Performed Towards The Oral Health Of School Children In Egypt.

Mohammed Hussein Marza Al-Taimoori, Amr Zahran And Ahmed Reda,

ABSTRACT
Objective: This Study Was Carried Out To Compare The Clinical Success Rate Of The Dental Implants That Are Placed With Or Without Immediate Loading In Fresh Extraction Sockets Versus Healed Bony Sites.

Materials and Methods: Twenty-nine Patients Were Divided Into Four Groups Receiving Eight Implants For Each Group. Group A: Received Implant Immediately After Extraction In Fresh Extraction Sockets With Immediate Loading. Group B Received Implants Immediately After Extraction In Fresh Extraction Sockets With Delayed Loading. Group C Received Implants In Healed Bony Sites With Immediate Loading. Group D Received Implants In Healed Bony Sites With Delayed Loading. Clinical And Radiographic Evaluations Were Done For All Groups Immediately Postoperative, 3 And 6 Months Intervals.

Results: Overall Survival Rate Of The Four Groups Was 100%. There Was No Significant Difference Between The Four Groups In Terms Of Crestal Bone Resorption, Bone Density, Probing Depth, Plaque Index, Bleeding Index, Gingival Index, And Periotest Values (p>0.05). Conclusion: The Dental Implants That Are Placed In Fresh Extraction Sockets And Healed Bony Sites With Or Without Loading Did Not Show Any Clinically Significant Differences Regarding Their Success Rate.

Eman Mohamed Nasr, Attiah Ali Algendy And Tamer Mohamed Nasr Mostafa,

ABSTRACT


Purpose: The Purpose Of This Study Was To Evaluate The Effect Of Dynamic Cyclic Loading On Screw Loosening Of Retightened Abutment Screw In Standard Implants.

Materials and Methods: The Study Was Carried Out On Separate Acrylic Blocks Containing Implant Assembly (fixture, Abutment, Abutment Screw, Metal Tube Capping The Abutment). 100,000 Cycles Of Eccentric Cyclic Loading Was Applied Before And After Retightening Then Removal Torque Loss Ratio Was Calculated According To Specific Equations And Analyzed By T-student, ANOVA Tests.

Results: There Was Significant Effect Of Retightening The Abutment Screws After Exposure To Dynamic Cyclic Loading.

Conclusions: To Manage Screw Loosening Process, It Is Better To Retighten The Screw Of Standard Implants.

Taher Talaat Ragab Hefny, Safaa Ali Ali Ghobashy And Atia Abd Elwareth Yousif,

ABSTRACT


Introduction: Dento-alveolar Dimensions Is Believed To Be One Of The Important Considerations In Treatment Planning Of Orthodontic Cases The Importance Of Dento-alveolar Dimensions Lies In Its Effect On Achieving A Sound Anteroposterior Orthodontic Tooth Movement Of Upper And Lower Incisors In Patients With Different Vertical Facial Patterns. Aim Of The Work: The Purpose Of This Study Was To Evaluate Dentoalveolar Dimensions In The Tooth-bearing Region Of The Jaws, In The Anterior As Well As The Posterior Region, Among Subjects With Different Vertical Facial Patterns In A Group Of Adults.

Materials and Methods: From A Sample Of 650 Lateral Cephalometric, 150 Scans Were Selected (75 Males And 75 Females) To Be Included In The Study. The Sample Was Divided Into High Angle (SN-MP > 37?), Low Angle (SN-MP?< 27?) And Average Angle (SN-MP 32?5?) Groups. The Anteroposterior And Vertical Dimensions Of The Alveolus Surrounding The Root Apex Of Anterior And Posterior Teeth Were Calculated.

Results: Compared To The Other Two Groups, High Angle Group Had Larger Anterior Dentoalveloar Height, With No Significant Difference In Alveolar Height Posteriorly In Both Maxilla And Mandible. On The Other Hand Low Angle Group Presented With Wider Alveolus Anteriorly In The Maxilla, While High Angle Group Had Thinner Alveolus In Both Maxilla And Mandible, Which Considered As A Limitation For Intrusive Movement Of Anterior Teeth. Conclusion: The Findings Of The Present Study Tend To Support The Prescence Of An Association Between Facial Patterns And Alveolar Dimensions. The Compensatory Changes In The Anteior Maxillary And Mandibular Dentoalveolar Dimensions That Associated With High And Low Angle Cases Should Be Considered By The Clinicians While Planning Treatment For Them, To Avoid Post Treatment Instability And/or Iatrogenic Sequelae. And Low Angle Cases Should Be Considered By The Clinicians While Planning Treatment For Them, To Avoid Post Treatment Instability And/or Iatrogenic Sequelae.

Mona Riad , Rofida Ragab And Mohamed Mostafa ,

ABSTRACT
The Aim Of This Study Was To Evaluate The Effect Of Mechanical Loading On The Micro Tensile Bond Strength Of Bioactive Restorative Material To Compare It With Nano Filled Resin Composite Restorative Material In Different Dentin Depths.

Materials and Methods: A Total Of 80 Teeth Were Used In The Study. The Teeth Were Randomly Divided Into 2 Groups Of 40 Specimens Each (n=40) According To Restorative Material Used,activa Bioactive Restorative Material And Filtek Z250. Each Group Represented The Two Dentin Depth Levels (D), The (D1) Represented Superficial Dentin Level And (D2) Represented Deep Dentin Level. Each Group Was Divided Into 2 Subgroups Of 10 Specimens Each (n=10) According To The Number Of Received Cycles That Represent 24 Hours And 3 Months (T). Composite Resin Application Were Done According To Manufacturer?s Instructions. Mechanical Aging Was Performed Using Programmable Logic Controlled Equipment (ROBOTA Chewing Simulator). Restored Teeth Were Serially Sectioned To Obtain Beam-shaped Specimens, With A Cross Section Area 1.0mm2. Data Were Analyzed By Kolmogorov?Smirnov Test For Test Of Normality. Three-way ANOVA Was Used To Showthe Effect Of Different Adhesive, Cycling And Dentin Depth On Microtensile Bond Strength Followed By Pairwise Comparison With Bonferroni Correction (?=0.05).

Results: Composite And Dentin Levels Showed A Significant Effect On The Microtensile Bond Strength At P 0.017* And <0.001* Prespectively. In Contrary The Tested Cyclic Loading Had A Non-significant Difference On The Microtensile Bond Strength Results At P=0.546.

Conclusions: Mechanical Loading (chewing Simulator) Had Negative Effect On Bio Active Material Used After 3months. While It Had No Effect On Nanofilled Composites.

Ibrahim Ahmed Abdel-Khalek Dahb, Attiah Ali El-Gendy And Faten Ahmed Abu-Taleb,

ABSTRACT
Objective: To Compare Clinically And Radiographically Between The Polymethylmethacrylate (PMMA) And Thermoplastic Nylon As A Denture Base Material For Implant Assisted Overdenture.

Materials and Methods: Twenty Completely Edentulous Male Patients Were Selected For This Study. All Patients Received 2 Implants In The Canine Region Of The Mandible. After Healing Period, All Patients Were Received Ball Attachment And Randomly Classified Into Two Groups, Ten Patients Each. Group I (G I): Patients Received A Conventional Maxillary Denture And A Mandibular Implant Assisted Overdenture That Were Constructed From PMMA. Group II (G II): Patients Received A Maxillary Conventional Complete Denture And A Mandibular Implant Assisted Complete Overdenture That Were Constructed From Thermoplastic Nylon. In Each Group, All Patients Were Evaluated Clinically, Radiographically At Time Of Denture Insertion Then At 6 Months, 12 Months And 18 Months. At The End Of The Study The Data Were Collected, Tabulated And Statistically Analysed.

Results: All The Implants Of The Two Groups Were Successfully Osseointegrated. There Was No Statistically Significance Difference Between The Groups As Regards To Clinical Evaluation And Radiographic Evaluation By Digital Periapical And Panoramic Radiograph. On The Other Hand There Was Significant Difference Within The Same Group During The Follow Up Period. Conclusion: Polyamide Shows Promising Results As A Denture Base Material For Implant Assisted Overdenture That Appear In The Clinical And Radiographic Evaluation Results. Nylon Can Be Used As Alternative To PMMA As Denture Base Material For Implant Assisted Overdenture

Ahmed El-Baz *, Ahmed Fayyad ** And Amal Kaddah***,

ABSTRACT
Background: Implant-supported Overdenture Is One Of The Most Predictable Treatment Options Used In Complete Edentulism. To Further Enhance The Conservatism A Single Implant To Retain A Mandibular Overdenture Has Been Purposed, But Which Attachment Yields The Best Outcome In Terms Of Patient Satisfaction And Maintaining The Integrity Of The Peri-implant Tissues?

Purpose: The Aim Of This Randomized Clinical Trial Was To Compare The Locator Versus The Ball And Socket Attachment Used With Complete Mandibular Overdenture Retained With A Single Midline Implant Regarding; Quality Of Life, Plaque Accumulation And Peri-implant Probing Depth.

Materials and Methods: Twenty Two Patients Were Selected To Participate In This Study. The Eligible Patients Were Then Randomly Assigned To Two Groups Equally. Group I Patients Received Mandibular Overdenture Retained With Single Midline Implant Using Locator Attachment While Group II Patients Received Mandibular Overdenture Retained With Single Midline Implant Using Ball Attachment. Oral Health Related Quality Of Life (OHRQoL) Was Measured Using The Short Form Oral Heal Impact Profile (OHIP) Questionnaire Over The Period Of 9 Months At Intervals Of 0, 3, 6 And 9 Months From Implant Insertion. Plaque Accumulation And Peri-implant Probing Depth Were Also Evaluated Over The Period Of 6 Months Of Implant Loading (at 3,6 And 9 Months From Implant Insertion).

Results: Both Groups Showed Statistically Significant Results In Terms Of Positively Enhancing The Quality Of Life As Compared To Conventional Complete Denture, However The Locator Attachment Was More Superior With Statistically Significant Difference When Compared To The Ball Attachment. Conclusion: Both Locator Or Ball Attachments Can Be Used As An Attachment To A Midline Single Implant To Retain An Overdenture Successfully With Both Systems Improving The Function, Pain, Psycho-social And Physical Ability Of The Patients. However, The Locator Is The Superior Attachment Scoring Better Results Over The Follow Up Period Of 6 Months.

Merna Ageeb Kamal , Sherif Farouk El Gayar And Hanan Eid Gamal,

ABSTRACT
Background: Grape Seed Extract (GSE) Has An Effective Anti-cancer Property Against Squamous Cell Carcinoma. The Aim Of The Study Is To Identify The Effect Of GSE On Squamous Cell Carcinoma Cell Line (HEP-2). Material And Method: Treatment Of Cell Line (HEp-2) By Different Concentrations Of GSE Was Done To Assess The Viability Of The Treated Cells To Determine The Percentages Of Viable Cells That Was Monitored Using MTT Assay. Using Annexin V And Caspase III For Determination Of Apoptosis.

Results: The Mean Viability Percentage Of GSE Treated Cells (in Relation To Control Cells) Decreases From 86.67 To 46.32 As GSE Concentration Increased From 0.39 ?g To 100 ?g. Morphometric Analysis Showed A Decrease In Nuclear Area Factor (NAF) Which Is An Indicator Of Apoptosis As Concentrations Increased. The Results Were Statistically Significant. Cell Cycle Analysis Showed Pre-G1 Apoptosis Produced By The Different Concentrations Of GSE. The Percentages Of Cells In Pre-G1 And G2/M Phases Increased With Control Cells. The Detection Of Caspase III Showed That Higher Level Of Caspase 3 Was Detected In Post IC50 Concentration Group, While The Lower Level Was Detected In The Control Group. Conclusion: GSE Has A Significant Anticancer Effect On Hep-2 Cell Line.

Zeinab M. Fawzy, Shaymaa I. Habib, Ahmed Hegazi And Dina H. Mostafa,

ABSTRACT
Objective: The Purpose Of This Study Was To Evaluate The Effect Of Adding Ethanolic Extract Of Propolis On Commercially Available Ca(OH)2 Liner On The Setting Time And Solubility.

Materials and Methods: The Materials Used Were Calcium Hydroxide Powder, Ethanolic Extract Of Propolis (EEP) And Distilled Water. Ethanolic Extract Of Propolis (EEP) Was Prepared Using 70% Ethanol At Room Temperature. The EEP And Distilled Water Were Used As A Liquid For Mixing The Ca(OH)2 Liner Forming Pastes That Were Divided Into Two Main Groups: Group I (the Control Group): Ca(OH)2 Liner Mixed With Distilled Water Only, Group II (the Intervention Group): Ca(OH)2 Liner Mixed With EEP And Distilled Water. A Total Of 20 Specimens (n=5 For Each Group Within Each Test) Were Used. For The Setting Time Test; The Specimens Had A Dimension Of (10mm X 2mm) And Were Measured Using Gillmore Needle. Regarding The Solubility Test, The Specimens (20mm X 1.5mm) Were Prepared And The Solubility Of The Mix Was Measured.

Results: For The Setting Time, The Results Revealed Significant Differences Between The Two Groups Where The Intervention Group Was Found To Set Faster Than The Control. However, Insignificant Difference In The Solubility Test Between The Two Groups Was Detected. Conclusion: Based On The Results Of The Present Study, It Was Concluded That The Addition Of 70% EEP And Distilled Water, Decreases The Setting Time And Did Not Affect The Solubility Of An Available Commercially Ca(OH)2 Powder Used As Pulp Capping Material.

Eman A. Shebl, Mostafa A. Hassan And Ali I. Abdallah,

ABSTRACT


Purpose: To Evaluate The Clinical Performance Of Bulk Fill Composite In Open Sandwich Technique Using Either Flowable Composite Or Resin Modified Glass Ionomer Liners After One Year.

Materials & Methods: A Total Of 20 Patients (4 Males & 16 Females Aged 25- 45 Years) Participated In This Study. Sixty Class V Cavities Were Restored With Either Tetric N Ceram Bulk Fill Composite Only, Tetric N Ceram Bulk Fill Composite With Flowable Composite Liner (Tetric N Flow) Or Tetric N Ceram Bulk Fill Composite With Glass Ionomer Liner (Ionoseal) Representing Three Main Groups (n=20). Each Patient Received At Least Three Restorations. The Cavity Design Was Restricted To Eliminate Carious Tissues From Primary Carious Lesions. All Restorations Were Subjected To Clinical Follow Up Schedule Representing (base Line, 6 Months And 12 Months) By Two Investigators. The Restorations Were Evaluated According To The Modified USPHS Criteria. The Data Were Collected, Tabulated And Statistically Analyzed At A Level Of Significance (P ? 0.05) Using Chi Square Test.

Results: Regarding The Clinical Performance Of The Tested Materials, There Was No Statistically Significant Difference Among The Three Tested Groups At Different Follow Up Periods (P > 0.05). Spearman?s Test Revealed A Statistical Positive Correlation Between Marginal Adaptation Versus Both Marginal Discoloration And Anatomic Form As Well As Marginal Discoloration Versus Both Surface Texture And Color Match.

Conclusions: 1- Bulk Fill Composite Restorations Placed In Sandwich Technique Exhibited A Satisfactory Clinical Performance After 1 Year Clinical Service Compared To Those Placed Without A Liner. 2- Flowable Composite Liners Had Better Clinical Behavior Compared To Resin Modified Glass Ionomer Liner.