Shaima�a Ahmed Aly, Ahmed Gamal Ahmed Hassan, Emad Mohamed Tolba And Gehan Fekry Mohammed,

ABSTRACT
Objective: Long-term Success Of Dental Implants Depends On Implant Abutment Connection . This Prospective Study Aims To Assess Bone Level Changes Around Implants With Self Locking Conical Connection And Traditional Platform Implant Abutment Connection With Mandibular Telescopic Supported Overdenture.

Materials and Methods: Twelve Completely Edentulous Patients Were Selected From The Outpatient Clinic Of The Prosthodontics Department; Faculty Of Dentistry, Minia University. Two Root Form Implants Were Inserted In Canine Area Bilaterally In Each Patient One Is Self -locking Implant Abutment Connection While The Other Is Traditional Platform ,then Telescopic Overdenture Was Constructed Over The Two Implant. The Crestal Bone Level Was Evaluated At 3,6,9,and 12 Months.

Results: The Mean Bone Heights At Different Intervals Of Self-locking Implant Abutments Connection Were 0.12�0.13 , 0.36�0.13, 0.51�0.06, 0.70�0.22,and0.81�0.25 At Baseline Three, Six, Nine And Twelve Months Respectively , While With Traditional Platform Implant Abutment Connation The Mean Bone Height Were T0.36�0.15, 0.58�0.13, 0.73�0.21, 0.82�0.15, And 0.98�0.18 At Baseline Three, Six, Nine And Twelve Months Respectively. Conclusion: Self Locking Conical Connection Implant Abutment Connection May Lead To Lower Rate Of Bone Resorption Rather The Dental Implants In Implant Supported Overdenture.

Gehan Fekry Mohammed, Amr Mohamed Ismail Badr And Moataz Alhosainy Hassan .,

ABSTRACT
Nowadays Mini-implant Overdenture Is Widely Used As A Substitution For The Conventional Two-implant Overdenture. The Thermoplastic Denture Bases Are Excellent Alternatives To Conventionally Used Acrylic Denture Bases, Therefore, The Purpose Of The Article Is To Evaluate Clinically The Patient Satisfaction, The Pocket Depth And Gingival Index Of The Supporting Structures Around Mini Implant Retained Over Denture Utilizing Three Different Denture Base Materials. Subjects And Methods: Twenty-four Healthy Completely Edentulous Male Patients Were Selected From The Outpatient Clinic, Patients Were Divided Randomly Into Three Equal Groups (eight Patients Each) According To The Denture Base Material: Group I: Patients Rehabilitated With Four Mini Dental Implants Retained Over Denture With Conventional Acrylic Denture Base. Group II: Patients Rehabilitated With Four Mini Dental Implants Retained Over Denture With Hard Thermoplastic Denture Base Polyan IC (PMMA) Group III: Patients Rehabilitated With Four Mini Dental Implants Retained Over Denture With Semi Flexible Thermoplastic Denture Base (bre Flex 2nd Edition). The Clinical Evaluation Was Measured In From Of Pocket Depth, Gingival Index And Patient Satisfaction After Immediate Loading Of The Dentures (baseline), 3, 6 And 12 Months.

Results: No Implant Failure Was Detected. The Mini Implants Were Assessed Clinically Throughout The Study Period By Observing The Absence Of Any Signs Of Inflammation Or Infection. The Pocket Depth And Gingival Index Values Were Significantly Higher In The Group Of Semi Flexible Thermoplastic Denture Bases While Patient Satisfaction Values Were Better In The Acrylic Group. Conclusion: Under The Limitations Of This Study, We Can Conclude That The Conventional Acrylic And Hard Thermoplastic Resins Are Better To Some Extent Than Semi Flexible Thermoplastic Resins Regarding The Peri-implant Gingival Measurements And Patient Satisfaction.

Ayman H. Amin, Gehan Fikry , Fardos N. Rizk And Amr B. Ismail .,

ABSTRACT
Objective: This Study Was Conducted To Measure The Difference Between Chrome Cobalt Telescopic Crowns And Poly Ether Ketone (PEEK) Telescopic Crowns Retaining Implant Retained Partial Overdenture Regarding Implant Stability, Crestal Bone Height Changes And Periodontal Pocket Depths

Materials and Methods: This Study Was Made On Fourteen Lower Kennedy Class I Partially Edendulous Patients. All Patients Received Posterior Implant In The Second Molar Area In Each Side. The Patients Were Divided Into 2 Groups, The First Group Received Chrome Cobalt Telescopic Crown And The Second Group Received Poly Ether Ketone Telescopic Crowns Over The Implants. Partial Overdenture Was Constructed For All The Patients In The Two Groups. Patients Were Followed Up Clinically To Measure Crestal Bone Height Changes Using Cone Beam Ct, Implant Stability Test Using Osstell And Periodontal Pocket Depths.

Results: Both Groups Showed Increase In Implant Stability, Periodontal Pocket Depths And Decrease In Crestal Bone Height, However The Difference Between The Two Groups Were Non-significant Except In The Periodontal Pocket Depth, The Chrome Cobalt Group Showed Increased Pocket Depths Than The PEEK Group.

Conclusions: From The Results Of This Study The Following Conclusions Could Be Obtained. There Was Almost No Difference In Crestal Bone Height Resorption Between The CrCo And The PEEK Telescopic Crowns, The Difference Between Implant Stability In Both Groups Were Non-significant, At The End Of The Follow Up Period, The PEEK Telescopic Crown Group Showed Lesser Periodontal Pocket Depths Than The CrCo Group Which Suggests That The PEEK Is More Biocompatible Than The Metallic Crowns.

Mostafa Elsayed Abdel Haleem F, Ahmed Gamal Ahmed Hassan, Emad M T Agamy And Gehan Fekry Mohammed .,

ABSTRACT
Statement Of Problem: Acetal Resin Has Been Introduced As An Esthetic Partial Denture Clasp And Framework Material. However, The Effects Of This Material On The Abutment Teeth Supporting Structures Were Not Clear.

Purpose: To Evaluate The Effects Of Acetal Resin Frame Work And Clasps On The Abutment Teeth Supporting Structures As Compared To Cobalt-chromium Frame Works And Clasps.

Materials and Methods: Fourteen Patients, 6 Males And 8 Females, With Kennedy Class I Partially Edentulous Maxilla And Dentulous Mandibles Were Selected For This Study. Patients Were Divided Randomly Into Two Equal Groups; Group 1 Received Maxillary Partial Denture With Acetal Resin Frameworks And Acetal Resin Clasps . Group 2 Received Maxillary Cobalt-chromium Partial Denture Frameworks With Cobalt-chromium Clasps. Bone Height And Density Of The Abutment Teeth Were Evaluated At Partial Denture Insertion And After 6 And 12 Months. Paired T-test Was Used At P < 0.05 To Assess The Changes In The Above Mentioned Parameters In Each Group. Student T-test Was Used To Compare Between The Two Groups.

Results: There Were Significantly Higher Reductions In Bone Height And In Bone Density In The Second Group Than That In The First Group. Conclusion: Acetal Resin Frameworks And Clasps Were Superior To Cobalt-chromium One Regarding Bone Resorption And Bone Density Around The Abutment Teeth. Clinical Implications: Based On The Changes Of The Studied Parameters ; Acetal Resin Clasp Abutments, It Could Be Used Successfully To Retain Partial Dentures.

Mohamed Medhat AL-Sobahy, Dina Mohamed EL-Beshlawy And Hany Mahmoud Omar .,

ABSTRACT
Objective: The Aim Of The Present Study Was To Assess The Effect Of Using Three Different Voxel Sizes On The Accuracy Of Planmeca Promax 3D Mid CBCT Images In Detection Of Simulated External Root Resorption Defects In Mandibular Single Rooted Teeth.

Materials and Methods: Fifty Five Recently Extracted Human Mandibular Incisor Teeth Were Collected And Disinfected, Five Hundred Defects Were Prepared On Their Different Root Surfaces Simulating External Root Resorption Lesions, The Teeth Were Positioned Inside The Sockets Of A Dry Mandible And Were Imaged By The Planmeca Promax 3D Mid CBCT Scanner Using 0.4, 0.2 And 0.15 Voxel Sizes, The Images Were Evaluated Independently By Two Radiologists.

Results: The Results Of Both Observers Showed That CBCT High Resolution Protocol Has Higher Sensitivity And Accuracy Than Normal And Low Resolution Protocol, Moreover, The CBCT Low Resolution Protocol Showed The Least Sensitivity And Accuracy Among All Protocols. Additionally, According To Both Observers, There Was A High Statistically Significance Difference In The Detectability Of All Simulated Defects Using CBCT Low Resolution Protocol (voxel Size 0.4) And Both Normal (voxel Size 0.2) And High (voxel Size 0.15) Resolution Protocols (P <0.001 HS), While There Was No Statistical Significance Difference In Detectability Of The Defects Using CBCT Normal And High Resolution Protocols (P > 0.05 NS). Conclusion: Considering The Studied CBCT Scanner, The Normal And High Resolution Protocols (voxel Sizes 0.2 And 0.15 Respectively) Showed A Similar High Efficacy In Detection Of Simulated External Root Resorption Defects In Mandibular Single Rooted Teeth And Their Usefulness Was Superior To That Of The Low Resolution Protocol (voxel Size 0.4). However, According To The ALARA Principle, The Normal Resolution Protocol Should Be The Scan Of Choice As It Delivers Less Radiation Exposure To The Patient.

Ahmed Kamel Abd El Nasser , Nagwa Mohamed Ali Khattab And Ehab Saeed Abd Elhamid .,

ABSTRACT


Introduction: Regenerative Endodontic Treatment On Immature Teeth With Apical Periodontitis Is Rapidly Becoming An Accepted Treatment Alternative To Conventional Apexfication. Aim This Study Was Designed To Evaluate And Compare The Clinical And Radiographic Findings Of A Regenerative Procedure Using Platelet-rich ?brin (PRF) And Blood Clot In Immature Necrotic Permanent Teeth 12 Months After The Procedure Subjects &Methods: 30 Teeth Were Divided Into Two Groups 15 Participants In Each ,control Group Treated With A Standardized Revascularization Treatment Protocol Using Blood Clot As Scaffold And Study Group Used PRF As Scaffold And Monitored For Clinical And Radiographic Changes For 12 Month. Standardized Radiographs Were Collected At Regular Intervals, And Radiographic Changes Were Quantified.

Results: All Treated Teeth Showed A Statistically Significant Increase In Radiographic Root Thickness It Was 0.88ml In The Study Group Compared To 0.67ml In The Control Group With (p Value= 0.001)also There Was An Increase In The Mean Root Length Of The Treated Teeth Both Study Group And Control Group,(1.25 Ml In The Study Group Versus 0.98ml In The Control Group, P= 0.001).the Success Rate In Clinical Evaluation Criteria Post Intervention Was High With No Significant Difference Between The Study Versus The Control Group 86.7% (n=13) Of Study Groups To 80% (n=12) In The Control Group) Conclusion: Blood Clot And PRP Showed Comparative Results In Terms Of Periapical Healing, Dentinal Wall Thickening, Root Lengthening And Apical Closure

Rehab S. El-Ghazzawi, Ghada A. El-Baz, Sahar Z. El-Azab And Tarek M. Nabil,

ABSTRACT
A Mouth Wash Is A Chemotherapeutic Agent Used As An Effective Home Care Remedy To Improve Oral Hygiene And Prevent Dental Caries By Targeting The Cariogenic Bacteria. Aim : To Evaluate And Compare The Effect Of Three Mouth Washes Of Natural Aqueous Extracts Of Pomegranate, Green Tea And Rosemary On Salivary PH Changes (pH Meter), Plaque Accumulation ( Sillness And L�e Plaque Index) And Counts Of Salivary Streptococcus Mutans And Lactobaciili.

Materials and Methods: Mouthwashes Were Prepared From Aqueous Extracts Of Pomegranate, Green Tea And Rosemary . 40 Children, Aged From 4-6 Years And 12-15 Years, Were Asked To Use Mouthwashes For 4 Days .The Effect Of Mouthwashes Were Evaluated On PH Of Saliva, Plaque Accumulation Rate And The Count Of Salivary Streptococcus Mutans And Lactobacilli. The Collected Data Were Statistically Analyzed. Results; In Both Age Group, After Using Mouthwash, Green Tea Mouthwash Showed Statistically Significantly Lower Mean Value In Mean Plaque Index Score After Using Mouth Wash. Rosemary Mouthwash In Group A(aged From 4-6y) Showed The Highest Mean PH Score With Non-statistically Significant Difference From Green Tea Subgroup. The Three Herbal Mouthwashes Showed Their Significant Inhibitory Effect On Streptococcus Mutans And Lactobacilli In Both Age Groups. Conclusion: Pomegranate, Green Tea And Rosemary Mouthwashes Could Be An Appropriate And Safe Choice To Decrease Dental Caries In Children.

Ehab Magdy Shafik, Sherif Farouk El-gayar, Enas Alaa El-din Abd El-Aziz And Hanan Eid Gamal .,

ABSTRACT
Aim Of Study: To Evaluate The Anticancer Potential Of Propolis On Human Laryngeal Squamous Cell Carcinoma Cell Line (Hep-2).

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

Results: MTT Assay Showed That The Mean Viability Percentage Of Propolis Treated Cells (in Relation To Control Cells) Decreased As Propolis Concentration Increased From 0.275mg To 280mg. Morphometric Analysis Showed A Decrease In Nuclear Area Factor (NAF) Which Is An Indicator Of Apoptosis As Concentrations Increased. The Results Were Statistically Significant. Conclusion Propolis Has A Significant Anticancer Effect On Hep-2 Cell Line.

Eslam Said Mohamed, Ragia Mohamed Mounir, Nadia Galal Mohamedand Maha Mohamed Sallam .,

ABSTRACT
Objective: To Evaluate The Effect Of Using Simvastatin On Bone Osseointegration Surrounding Dental Implants. Methodology: Twelve Implants That Were Inserted And Divied Into 2 Equal Groups, Each Group Contained Six Implants (simvastatin Group And Control Group). All Implants Were Done Using Delayed Submerged Implant Insertion Technique. Group One Received Simvastatin Powder As An Adjunctive; To Improve The Osseoientgration Of The Bone Surrounding The Dental Implants, While Group Two With No Adjunctive. All Patients Were Followed Up Clinically And Radiographically For Osseointegration Using Cone Beam CT Two Months, And Six Month Postoperatively.

Results: Simvastatin Group Showed Statistically Low Significant Increase In The Percentage Of Increase In The Mean Bone Density, When Compared To The Control Group. Moreover, It Showed Statistically Low Significant Decrease In The Bone Height Loss Than The Control Group. Conclusion: Simvastatin Powder Is A Safe, Efficient And Easy Way For Mild Acceleration Of Bone Healing And Osseointegration Surrounding Titanium Dental Implants. The Simvastatin Drug Has The Main Function As Antihypercholaesterlemia Drug In Addition To Its Ostegeonic Effect On Bone.

Amal Abu El- Hassan Mohamed, Mahmoud Hamdy Eid And Nada Mohamed Wassef,

ABSTRACT
Sealants Form A Physical Barrier Between The Oral Environment And Deep Fissures That Contribute To Caries Prevention. It Is Postulated That Sealants Possessing Antibacterial Properties Are Advantageous.

Aim: Study The Bacterial Inhibitory Effect Of Two Fluoride Releasing Fissure Sealants (Teethmate F-Kuraray, Fissurit F- Voco) On The Inhibition Of Streptococcus Mutans And Lactobacillus Acidophilus.

Materials and Methods: The Strains Of Streptococcus Mutans And Lactobacillus Acidophilus Were Grown In The Brain Heart Infusion Broth Then Incubated For 18 Hr At 37?C And Subcultured In Selective Agar. The Zone Of Inibition Was Measured In Mm.

Results: Teethmate F-1 Showed More Antibacterial Property Against Streptococcus Mutans Than Fissurit F And There Was No Statistically Significant Difference Between Teethmate F-1 And Fissurit F Against Lactobacillus Acidophilus.

Conclusions: Within The Limitations Of This In-vitro Study, It Can Be Concluded That Both Materials Are Capable Of Contact Inhibition Of Streptococcus Mutans And Lactobacillus Acidophilus Growth.