Mariam Mohsen Aly, Sherine Ezz El-Din Taha, Manal Ahmed El Sayed, Randa Youssef And Hany Mahmoud Omar,

ABSTRACT


Aim: To Evaluate Clinically And Radiographically The Effect Of Using Two Types Of Coronal Plug Materials In Revascularization Of Non-vital Immature Teeth. Study Design: Pulp Revascularization Was Performed In Twenty Six Necrotic Immature Permanent Anterior Teeth Using Double Antibiotic Mix For Root Canal Disinfection. According To Coronal Plug Material, Patients Were Divided Randomly Into Two Groups Biodentine And White Mineral Trioxide Aggregate (MTA) (n=13). Clinical And Radiographic Evaluation Were Performed After 3, 6, 9 And 12 Months.

Results: When Comparing The Clinical And Radiographic Sign And Symptom Of Periapical Healing Between Two Groups, There Was No Statistical Significant Difference (P>0.05).

Conclusions: Biodentine Can Be Used As Substitute To MTA As Coronal Plug In Pulp Revascularization Of Immature Teeth With Necrotic Pulp.

Marwa Aly, Dalia Moheb, Osama Elshahawy, Ahmed Abd-elsamad And Mervat Rashed,

ABSTRACT
Objective: This Study Evaluated Radiographically The Changes In The Remaining Dentin Thickness And Density Following Indirect Pulp Treatment (IPT)of Young Permanent Molars With Photoactivated Oral Disinfection (PAD)in Comparison To Calcium Hydroxide(CH). Methods: Indirect Pulp Treatment With Either Photo-activated Oral Disinfection (Group I) Or Calcium Hydroxide(Group II) Was Performed In Thirty-two Permanent Molars With Deep Caries. Evidence Of Dentin Bridge Formation And Change In The Remaining Dentin Thickness And Density Were Assessed After 9 Months Of Treatment.

Results: Radiographic Assessment Showed Evidence Dentin Bridge Formation In All Teeth With An Increase Of 69,99 % And 65.43 % For Group I And II Respectively. The Radiographic Assessment Also Revealed Change In The Remaining Dentin Density Of 3.44% And 3.34 For Group I And II Respectively

Conclusions: No Difference Regarding The Radiographic Treatment Outcomes Following Indirect Pulp Treatment Of Young Permanent Molars With Either Photoactivated Oral Disinfection Or Calcium Hydroxide Was Found.

Doaa Abdou, Rasha Hassan And Mai Yousry,

ABSTRACT

Objectives: This Study Is Designed To Evaluate The Surface Microhardness Of Ormocer-based And Highly Filled Flowable Resin Composites In Comparison To The Conventional Flowable Resin Composite, Before And After Erosion And/or Abrasion Challenge. Methods: Resin Composite Discs Were Prepared By Packing Each Of The Intervention And Control Materials In Teflon Moulds (3x3) Followed By Standardized Light Curing. Then All Specimens Were Finished And Polished And Then Stored In Distilled Water For 24 Hours. Specimens Subjected To Erosive Challenge Were Immersed In An Acidic Solution At 37oC, While Those With Abrasive Challenge Were Subjected To A Standardized Procedure Of Tooth Brushing Using An Electrical Toothbrush, Either With Or Without An Abrasive Toothpaste. The Third Subgroup Were Subjected To An Erosive Followed By An Abrasive Challenge Either Without Toothpaste Or With An Abrasive Toothpaste. All Specimens Were Tested For Surface Microhardness Using Vicker?s Microhardness Tester At Baseline And After The Challenges.

Results: All Interventions With All Challenges Whether Erosion, Abrasion Or Erosion Plus Abrasion With Or Without Toothpaste, Showed A Statistically Significant Decrease In Surface Micro-hardness.

Conclusions: Ormocer-based Flowable Composite Had The Best Chemical Resistance To Erosion Among All The Materials, While Conventional And Highly Filled Flowable Composites Are More Capable Of Resisting Abrasion.

Mostafa Abd-elrahim Said, Manal Rafie Hassan And Mohammed Tarek ALwakad,

ABSTRACT
Background. The Placement Of Dental Implants Is In Some Cases Restricted By Various Anatomic Limitations Such As An Insufficient Residual Bone Height. Cantilever Extensions In Implant-supported Prosthetic Partial Dentures May Result In Unfavorable Loading On The Abutment Fixtures. Adjunct Support Of The Distal Cantilever Partial Denture By A Short Implant At Distal Extension Area May Reduce The Overloading On The Dental Abutment Implants. Purpose. To Determine Effect Of Additional Supplementary Support Of A Short Implant For A Cantilever Bridge On Stress Distribution Around Implant Supported Fixed Partial Denture Components Material And Methods. An Acrylic Resin Model Was Fabricated To Be Morphologically Identical To The Maxillary Arch Into Which Two Internal Hexagon Standard-sized Implants (3.75 Mm Diameter-13mm Length To Support A Porcelain Fused To Metal ?pfm? Cantilever Bridge Extending From The Upper 1st Premolar To The Upper 2nd Molar, And A Supplementary Short Implant Beneath The Contact Of The 1st And 2nd Molar), To Which Load Was Applied At Two Points( The 1st Molar Representing The Fixed-fixed Bridge, And The 2nd Molar Representing The Cantilever Extension) And Readings Were Collected From The Strain Gauges(SG) Bonded To The Acrylic Model( One Is Bonded Mesial To The Standard Implant Supporting The 1st Premolar?SG0?, Two Other Bonded Mesial And Distal To The Standard Implant Supporting The 2nd Premolar?SG1, And SG2?, And Another Bonded Mesial To The Short Implant Beneath The Contact Of The 1st And 2nd Molars?SG3?, Respectively), To Determine The Effect Of Stress Application On These Points Throw Strain Determination . Results. Strain(N/m2) Readings From Strain Gauges(SG0, SG1, SG2, SG3) Generated By Applying Force On The Cantilever Extension ? With The Strain Decreasing Slightly From The 4mm Short Implant To The 6mm Short Implant? ( Range From 4mm To The 6mm Short Implant; SG0:22-20.6, SG1:72-69.8, SG2:87-83.8, SG3:174-171), Are Higher Than Those Generated By Applying The Same Magnitude And Direction Of Load On The Fixed-fixed Bridge (range From 4mm To The 6mm Short Implant; SG0: 9-7, SG1: 45-40.4, SG2: 62-56.6, SG3: 153-149) To Show Statistical Significance( P Value >0.05), Yet The Length Of The Short Implant Didn`t Show Statistical Significance Regarding Which Can Decrease Strain More Than The Other (p Value <0.05) Conclusion. The Extra-support Of A Short Implant At Distal Extension Area Had A More Favorable Effect On The Cantilever Prosthesis Than Using A Free Non-supported Cantilever Extension

Sabreen Gamal Khalil, Amr Helmy El-Bolok, Sherif Farouk El-gayar, Maii Ibrahim Solkamy And Enas Alaa Eldeen Abd Elaziz,

ABSTRACT
Aim Of Study: To Evaluate The Anticancer Potential Of N. Haje Venom On Head And Neck Squamous Cell Cancer (HNSCC) Cell Line (HEp-2).

Materials and Methods: Prepared (HEp-2) Cell Line Was Treated With Different Concentrations Of N. Haje Venom For 24 Hours. The Effect Of N. Haje Venom On Cell Line Was Investigated Using MTT Assay, Cytological Examination, And Nuclear Morphometric Analysis. The Results Were Analyzed Statistically.

Results: The MTT Assay Showed That The Viability Of HEp-2 Cells Decreased As N. Haje Venom Concentrations Increased With Pre IC50 =25�g/ml, IC50= 60.32�g/ml And Post IC50= 80�g/ml. Morphometric Analysis Showed A Decrease In Nuclear Area Factor (NAF) Which Is An Indicator Of Apoptosis As Concentrations Increased. The Results Were Statistically Significant P Value 0.0001. Conclusion: N. Haje Venom Has A Significant Anticancer Effect On HEp-2 Cell Line.

Hassan Fahmy Hassan Alnimr, Hamida Refai Hassanien And Omniya Abdel Aziz,

ABSTRACT
The Aim Of This Study Is To Compare Two Different Approaches; LA Injections And DN Therapy, For Deactivating MTrPs Within The Jaw Muscles. Subjects And Methods: 100 Eligible Patients With Active MTrPs Within The Jaw Muscles Were Randomly Allocated To One Of Two Study Arms With 1:1 Allocation Ratio By Using Computerized Sequence Generation: The ?intervention? Group Who Underwent DN Of The TrPs Or The Control Group Who Underwent Mepivacaine Injection Of The TrPs. Sixty Patients Dropped Out Throughout The Trial. This Resulted In A Study Sample Which Consisted Of 40 Patients, 20 Patients In Each Group, Of Both Genders (37 Females And 3 Males), Aged Between 14-50 Years (average Of 30.17 Years). Each Patient In Both Groups Received 3 Treatment Sessions At An Interval Of 2 Days In The First Week, 2 Treatment Sessions At An Interval Of 3 Days In The Second Week And One Treatment Session At The End Of The Third Week.

Results: The Results Of This Study Demonstrated That Both Groups Showed Statistically Significant Reduction In Current And Worst Pain At T2. Comparing The Pain Scores At T3 To Those At T2 Showed Insignificant Decrease In The DN Group And Significant Increase In The LA Group. Nevertheless, The Pain Scores At T3 Were Significantly Lower When Compared To Those At The Baseline In Both Groups. There Were No Statistically Significant Changes In MMO Or In PPT In Both Groups Throughout The Study Intervals. Comparing The Two Treatment Modalities Revealed Insignificant Difference In All The Evaluated Parameters Throughout The Study Intervals With The Exception At T3 The Current And Worst Pain Values In The DN Group Was Statistically Significantly Lower Than Those In The LA Group.

Emad .G. Mohamed, Nadia. A. Abbas And Mohamed. F. Abdalla,

ABSTRACT
Aim Of The Study: In Vivo Study Was Conducted To Compare The Effect Of Two Different Denture Base Materials (rapid Heat Cure Acrylic Resin And Modified Rapid Heat Cure Acrylic Resin With Titanium Dioxide Nanoparticles) On The Surface Roughness Of The Maxillary Complete Denture.

Materials and Methods: Twenty Patients With Completely Edentulous Maxilla Were Randomly Selected According To Inclusion And Exclusion Criteria, Primary Impressions Were Made Using Irreversible Hydrocolloid, Secondary Impressions Were Made Using Green Stick Compound As A Border Molding Material And Zinc Oxide/eugenol As A Final Wash Impression Material Then The Master Casts Were Duplicated Using Duplicating Silicone, Both Dentures Were Processed In Boiling Water For 20 Minutes, Each Patient Received Two Dentures; Rapid Heat Cured Acrylic Denture Base And Modified Rapid Heat Cured Acrylic Denture Base With Titanium Dioxide Nanoparticles Then Surface Roughness Was Measured Using Stylus Profilemeter

Results: Showed That There Was No Statistically Significant Difference Between The Two Types Of Denture Base Materials

Badr A. Abdelatif, Ahmed S. Hashem, Mostafa I Shendy And Wael M. Refai,

ABSTRACT
Objective: To Assess The Reliability Of 3D Virtual Simulation In Prediction Of Orthognathic Surgery Cases.

Materials and Methods: This Was A Prospective Study Which Conducted Over Ten Patients Were Planned To Do Orthognathic Surgeries And Already Underwent Their Presurgical Orthodontic Treatment. CBCT Scans Were Taken One Month Before Surgery And Three Months Later After The Surgery At (T0) And (T1) Respectively. Surgical Procedures Were Simulated Using Dolphin 3D Software, And The Virtual Plan Was Transferred To The Operation Room Using 3D-printed Splints. Differences Of The 3D Measurements For The Hard And Soft Tissues Between The Virtual Plan And (Actual) Postoperative Outcome Were Assessed. Data Will Be Gathered And Tabulated For Statistical Analysis.

Results: The Overall Results Were Deemed Accurate, And Differences Among 11 Of The 14 Parameters Were Considered Non-significant. Results Showed That No Significant Difference Between All Hard Tissue Predicted And Actual Measurements, Although Significant Differences Appeared In 3 Measurements Of Soft Tissue. Significant Differences Were Reported For LsLi-NsSn (p Value = 0.01), N?-Ba-Me? (p Value = 0.03) And Li-Esthetic (p Value = <0.001).

Conclusions: The Study Shows That The Software Program Used In The Study Is Reliable For 3D Planning In Hard Tissue Predictions And UN Reliable In Soft Tissue Predictions.

Nashwa M. Khalil, Hayam Y. Hassan And Dalia M. Fayyad,

ABSTRACT
The Present Study Evaluated The Fracture Resistance Of Endodontically Treated Teeth Restored With Two Different Fiber Post Designs (tapered Post And Parallel Tapered End Post) Using Different Irrigating Regimen, 5.25% Sodium Hypochlorite (NaOCl) And 5.25% NaOCl Followed By Ethylene-diamine-tetra-acetic Acid (17% EDTA). Ninety Extracted Human Two Rooted Maxillary Premolar Teeth With Average Length 20�1mm Were Collected. Eighty Specimens Were Divided Into Two Main Groups (n=40) According To The Type Of Irrigant Used During Instrumentation And Ten Specimens Left As Control Groups (five Specimens Were Left Without Preparation As Negative Control Group And The Other Five Specimens Were Prepared Without Post Placement As Positive Control Group) Each Main Group Were Subdivided Into Two Subgroups (n=20) According To The Type Of Fiber Post Design. Specimens Were Mounted And Louds Were Applied With Across Head Speed Of 1mm/min By Universal Testing Machine Till Failure Occurred. Data Were Calculated And Statistically Analyzed. The Results Showed That Irrigant Solution And Post Design Had A Statistically Significant Effect On Mean Fracture Resistance. NaOCl + EDTA Used With Parallel Tapered End Fiber Post Group Showed The Highest Mean Of Fracture Resistance Followed By NaOCl With Parallel Tapered End Fiber Post, Then With Tapered End Fiber Post And NaOCl With Tapered End Fiber Post Showed The Statistically Significantly Lowest Mean Fracture Resistance.

Handren Hunar Najeeb And Saeed A. Mohammed,

ABSTRACT
Background And
Objectives: Oral Health Is Very Important To The Appearance And Sense Of Wellbeing. Microbial Dental Plaque Is Main Cause For Both Dental And Periodontal Diseases; Therefore, Plaque Control Represents The Cornerstone Of Good Oral Hygiene Practice. Standard Mechanical Oral Hygiene Methods Along With Regular Professional Care Have Traditionally Been Relied On To Prevent And Treat Periodontal Diseases. Epidemiological Data Have Indicated That These Methods Do Not Achieve Their Theoretical Potential For Controlling Bacterial Plaque Accumulation And Gingival Disease. The Aim Of This Study To Determine The Most Effective Mouth Washes On Gingival Health And Dental Plaque. Participants And Methods: Randomized Controlled Clinical Trial Was Established For A Period Of Six Months, 120 Patients With Age Group From (20 To 35) (48 Females And 72 Males). This Study Was Done In Health Care Center In North Oil Company/Kirkuk Among Employees Of The Company Attending Dental Clinic In The Health Center To Ensure The Follow Up Of The Patients And Do Not Loss Them, And Divided To Four Groups By Using Different Mouthwashes (Chlorhexidine, Essential Oil And Sodium Fluoride) To Compare The Efficacy On Plaque Accumulation And Gingivitis, Along With A Placebo.

Results: All Three Mouthwashes Showed Reduced Dental Plaque And Gingivitis; However Chlorhexidine Was More Effective Followed By Listerine And Then Sodium Fluoride. Conclusion: All Mouthwashes Significantly Reduce Dental Plaque Accumulation And Gingivitis. Chlorhexidine Is Considered The Best Mouthwash In Comparison With Essential Oil And Sodium Fluoride Regarding Decreasing Dental Plaque And Gingivitis.