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Articles 31 - 48 of 48
Full-Text Articles in Prosthodontics and Prosthodontology
Orofacial Esthetic Scale (Oes) And Psychosocial Impact Of Dental Aesthetic Questionnaire (Pidaq): Development And Psychometric Properties Of Central Indian Version, Gunjan Taori, Amit Reche, Chinmayee Dahihandekar, Kaustubh Mantri, Neshant Rathi
Orofacial Esthetic Scale (Oes) And Psychosocial Impact Of Dental Aesthetic Questionnaire (Pidaq): Development And Psychometric Properties Of Central Indian Version, Gunjan Taori, Amit Reche, Chinmayee Dahihandekar, Kaustubh Mantri, Neshant Rathi
International Arab Journal of Dentistry
Background: Orofacial Esthetic Scale (OES) is used to test psychometric properties of Indian population and Indian version of Psychosocial Impact of Dental Aesthetic Questionnaire (PIDAQ) for psychometric evaluation. The aim of this study is to develop Orofacial Esthetic Scale (OES) in Indian version, to test psychometric properties of individuals in the cultural environment in central India.
Materials and methods: A hospital based cross sectional study was done, where altogether 30 questions were asked to patients, their relatives and to dentists. 8 questions were related to Orofacial Esthetics Scale (OES) whereas 22 pertaining to Psychosocial Impact of Dental Aesthetic …
The Effect Of Different Functional Monomer Of Zirconia Primer And Universal Adhesive On Shear Bond Strength Of Zirconia To Composite Resin Using Resin Cement, Pimchanok Pitakassawakul
The Effect Of Different Functional Monomer Of Zirconia Primer And Universal Adhesive On Shear Bond Strength Of Zirconia To Composite Resin Using Resin Cement, Pimchanok Pitakassawakul
Chulalongkorn University Theses and Dissertations (Chula ETD)
Zirconia has been increasing used due to its good mechanical properties but the study about the ability to bond to zirconia ceramic is still limited. The purpose of this study is to evaluate the bond strength of zirconia using MDP-containing zirconia primer and GPDM-containing universal adhesive. Twenty-one super-high translucent zirconia discs (Ceramil zolid fx White; AMANN GIRRBACH, Austria), 8.5 mm in diameter and 3.2 mm in thickness, were prepared. The specimens were divided into 3 groups (n=7) according to primer application, Group I: no primer application (control group), Group II: Z-Prime plus® (Bisco, Schaumburg, Illinois, USA) and Group III: Optibond …
Analysis Of Gene Expression And Histology Of Bone Regeneration Using Mrna Encoding Bone Morphogenetic Protein-2 In Rat Femur, Duangporn Yongyosrungrueng
Analysis Of Gene Expression And Histology Of Bone Regeneration Using Mrna Encoding Bone Morphogenetic Protein-2 In Rat Femur, Duangporn Yongyosrungrueng
Chulalongkorn University Theses and Dissertations (Chula ETD)
The quality of bone healing is an important factor in dental implant treatment. Currently, there is only limited research on using mRNA encoding BMP-2 to improve the quality and quantity of bone. This study aimed to evaluate the effectiveness of bone healing in rat femur defect after delivery of dPBS, rhBMP-2 and mRNA-encoding BMP-2 (BMP-2 mRNA-LNP). Histology approach was used to measure the quantity of newly formed bone. RT-qPCR was used to study gene expression levels of BMP-2, OCN, BSP and TNF-α. Subsequently, RNA-Seq analysis was performed at six weeks post-operation. Histological study revealed that BMP-2 mRNA-LNP group had significantly …
The Effect Of Different Self-Adhesive Resin Cements On Shear Bond Strength Of Hybrid Ceramic And Dentin, Rattawich Hoonsuwan
The Effect Of Different Self-Adhesive Resin Cements On Shear Bond Strength Of Hybrid Ceramic And Dentin, Rattawich Hoonsuwan
Chulalongkorn University Theses and Dissertations (Chula ETD)
ActivaTM bioactive is the first developed of dual cured, self-adhesive resin cement. For this in vitro study was to compare and evaluate the three differentsshear bond strength among ActivaTM bioactive, Maxcem EliteTM and RelyXTMU200 cement, when used as adhesive between CAD-CAM hybrid ceramic; Vita EnamicTM and dentin surface. The Vita EnamicTM block was designed and fabricated into forty-two discs shaped with CAD software. Forty-two extracted third maxillary molars was also collected. The all teeth were free of dental caries, restoration and cracked line were mounted vertically in the epoxy resin with exposedthe occlusal surface. Dentin surfaces were flatted surface by …
Micro-Computed Tomography And Mechanical Test Of Bone Regeneration Using Mrna Encoding Bone Morphogenetic Protein-2 With Implant Placement In Rat Femur, Kanoksiri Jriyasetapong
Micro-Computed Tomography And Mechanical Test Of Bone Regeneration Using Mrna Encoding Bone Morphogenetic Protein-2 With Implant Placement In Rat Femur, Kanoksiri Jriyasetapong
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research evaluates the effectiveness of a modified mRNA encoding bone morphogenetic protein-2 (m1Ψ-BMP-2 mRNA) with N1-methylpseudouridine modifications on bone regeneration and integration after implantation into rat femur defects. In the study, twelve femurs from six Sprague-Dawley rats underwent titanium wire insertation. These femur defects were then filled with either 5 μg of m1Ψ-BMP-2 mRNA, 15 μg of m1Ψ-BMP-2 mRNA, or Dulbecco's phosphate-buffered saline (dPBS) in a randomized manner (N=4 each group) Six weeks post-implantation, the rats were euthanized for evaluation using micro-computed tomography and a mechanical push-out test. The Micro-CT analysis focused on several parameters including total bone volume, …
Effect Of Different Implant Angulations And Insertion-Removal Cycles On The Retentive Force Of Locator And Locator R-Tx Attachments, Jidapha Tangtrongmit
Effect Of Different Implant Angulations And Insertion-Removal Cycles On The Retentive Force Of Locator And Locator R-Tx Attachments, Jidapha Tangtrongmit
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study aims to assess the implant of varying angulations and insertion-removal cycles on the retentive force of 2 denture attachments. The blocks were produced via 3D printing and divided into 2 groups: the LOCATOR attachment with orange retentive inserts and the LOCATOR R-Tx attachment with pink retentive inserts. Each group was divided into 3 subgroups based on implant angulation at 0-, 15-, and 30-degree implant angulation. The insertion-removal cycles were performed in 37 ±1°C deionized water using an INSTRON E1000 machine. Retentive force tests were conducted using a universal testing machine at baseline, after 270, 540, 810, 1080, 2160, …
Gene Expression Of Soft Tissue Covering Bone Grafted With Xenograft In Human, Atithan Termworasin
Gene Expression Of Soft Tissue Covering Bone Grafted With Xenograft In Human, Atithan Termworasin
Chulalongkorn University Theses and Dissertations (Chula ETD)
Soft tissue is one of many factors that influence the esthetic success of dental implants. This study explores soft tissue reaction between soft tissue covering bone grafted with xenograft and soft tissue in normal healing by analyzing the levels of inflammatory cytokine including TNF-α, IL-6, IL-8 and NF-kB1. Soft tissues are collected after 4 to 6 months of healing and analyzed by reverse transcription quantitative polymerase chain reaction (RT-qPCR). The result shows that the relative gene expression of TNF-α, IL-6, IL-8, and NF-kB1 are not significantly different in soft tissue covering xenograft compared to the ones in soft tissue covering …
The Effect Of Surface Treatment And Types Of Translucent Monolithic Zirconia On The Shear Bond Strength Of Porcelain Repaired To Zirconia, Karnkanith Hansomwong
The Effect Of Surface Treatment And Types Of Translucent Monolithic Zirconia On The Shear Bond Strength Of Porcelain Repaired To Zirconia, Karnkanith Hansomwong
Chulalongkorn University Theses and Dissertations (Chula ETD)
In the event of proximal contact loss in a zirconia crown on an implant, the zirconia crown can be modified by adding porcelain to recreate the proximal contact. This study investigated the shear bond strength between translucent zirconia (4Y-PSZ) and veneering porcelain compared to conventional zirconia (3Y-TZP). Zirconia substructures were treated with airborne-particle abrasion with Al2O3. The results of the shear bond strength test were analyzed by One-way ANOVA and post-hoc comparisons with Tukey’s honest significant difference (HSD) test. The shear bond strengthranged from 21.87 and 27.79 MPa. The failure mode was mixed failure in all groups. From the results, …
Enhanced Human Periodontal Ligament Stem Cell Viability And Osteogenic Differentiation On Two Implant Materials: An Experimental In Vitro Study, Engy Adel Ahmed Farag, Sara Fikry Dr, Shereen N. Raafat
Enhanced Human Periodontal Ligament Stem Cell Viability And Osteogenic Differentiation On Two Implant Materials: An Experimental In Vitro Study, Engy Adel Ahmed Farag, Sara Fikry Dr, Shereen N. Raafat
Dentistry
Background: Surface roughness of dental implants impacts the survival of adult periodontal stem cells and rate of differentiation. This research was conducted to test how human periodontal ligament stem cells behaved on yttria stabilized tetragonal zirconia polycrystals and polyetheretherketone (PEEK) discs with different surface topographies.
Methods: Discs roughening was prepared by sandblasting. Stem cells were cultivated on zirconia discs with a polished surface, polyetheretherketone (PEEK) discs with a polished surface, sandblasted zirconia discs and sandblasted polyetheretherketone (PEEK) discs. Cells viability was assessed after 24, 48, 72 hours. Scanning electron microscopy was used to examine the adherence and attachment of cells. …
Effect Of Overlay Material Type And Design On Fracture Resistance Of Mod Cavities In Molars. (In-Vitro Study), Sara Adel Botros, Mohamed Fouad Haridy, Shaimaa Gad
Effect Of Overlay Material Type And Design On Fracture Resistance Of Mod Cavities In Molars. (In-Vitro Study), Sara Adel Botros, Mohamed Fouad Haridy, Shaimaa Gad
Dentistry
Objective: To evaluate the influence of restoration material type (CAD/CAM lithium disilicate blocks and reinforced composite blocks) and restoration design on fracture resistance of molars with MOD cavities. Methods and Materials: A total of 54 sound human molars were divided into 2 groups (n=9) according to: 1) material type: lithium disilicate CAD/CAM blocks and reinforced composite CAD/CAM blocks; 2) restoration design: overlay with intra-coronal extension or without intra-coronal extension. Additional 18 samples were assigned to positive control group (sound molars, n=9) and negative control group (unrestored MOD cavities, n=9). Standardized MOD cavities were prepared with occlusal width 3 mm, cavity …
Effect Of Different Digital Impression Techniques On The Trueness Of Post Space Scans With Fixed Cervical Diameter, Omar Elsergany
Effect Of Different Digital Impression Techniques On The Trueness Of Post Space Scans With Fixed Cervical Diameter, Omar Elsergany
Dentistry
Objective: The aim of this study was to measure the trueness of post space impression by 2 digital impression techniques: Impression Scanning (IS) and Model Scanning (MS) with cervical diameter 3 millimeters. Materials and methods: Fourteen freshly extracted single rooted lower second premolars were endodontically treated using Wave-One single file technique. Then mounted in acrylic blocks parallel to long access using a dental surveyor 2mm above the CEJ, drills in sequence 1.4 and 1.6 millimeter then diamond stone with 3 millimeter diameter were used for teeth preparation with a standardized depth of 8mm. Teeth were scanned by reference scanner InEos5 …
Geriatric Esthetics: A Comparison Of Prosthodontists, General Practitioners, And Laypeople's Perception, Rawinun Puangkaew
Geriatric Esthetics: A Comparison Of Prosthodontists, General Practitioners, And Laypeople's Perception, Rawinun Puangkaew
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this study, we evaluated the esthetic perceptions of prosthodontists, general practitioners, and laypeople in elderly smile, using varying the exposure of the maxillary incisors in rest position and a full smile, size of buccal corridor and gingival display of maxillary posterior teeth. The picture of elderly smile was modified and shown with randomized sequence. Participants are asked to rate each image by using a numerical visual analog scale (0-10 scale). A total of 150 participants consisted of 50 Thai prosthodontists, 50 general practitioners, and 50 laypeople. Some pictures exhibited statistically significant differences (p0.05). All variation of incisal display were …
Influence Of The Margin Design On The Fracture Resistance Of Implant Supported Monolithic Zirconia Crowns: An In Vitro Study, Camille Haddad, Ryan Harouny, Karim Corbani, Lara Nasr, Ronn Tassidis
Influence Of The Margin Design On The Fracture Resistance Of Implant Supported Monolithic Zirconia Crowns: An In Vitro Study, Camille Haddad, Ryan Harouny, Karim Corbani, Lara Nasr, Ronn Tassidis
International Arab Journal of Dentistry
Introduction: The purpose of this in vitro study was to test the influence of the margin design of implant supported monolithic zirconia crowns and test if monolithic zirconia crowns with extra fine finish line thickness cemented on zirconia implant abutments can bare the maximum masticatory forces on molars and hence be used in the posterior region.
Methods: Fourteen identical monolithic zirconia crowns cemented on zirconia implant abutments mounted on titanium bases and fixed on implant replicas embedded in PMMA resin were divided into two groups: group I designed with a 0.5 mm CFL (CFL) and group II with …
Rehabilitation Of A Patient With Single Complete Tooth-Supported Overdenture Against The Unmodified Natural Dentition Using Functionally Generated Path Technique: A Case Report, Akanksha Shinde, Nilesh Bulbule, Varun Bhatt, Gayathri Balachandran, Amit Jagtap
Rehabilitation Of A Patient With Single Complete Tooth-Supported Overdenture Against The Unmodified Natural Dentition Using Functionally Generated Path Technique: A Case Report, Akanksha Shinde, Nilesh Bulbule, Varun Bhatt, Gayathri Balachandran, Amit Jagtap
International Arab Journal of Dentistry
Meyer’s proposed chew-in technique also called functionally generated path (FGP) technique, is indicated for the restoration of an edentulous arch that is opposed by natural teeth as it does seem to provide the most accurate method of recording occlusal patterns, also help to minimize the effects of negative factors, and to overcome the deficiencies of articulators. As stated by Rudd and Morrow, this technique is especially suitable for tooth-supported complete dentures, due to inherent stability of tooth-supported record bases helps in recording jaw relationships accurately. Whenever a single complete denture is opposed by natural dentition, problems observed are abrasion of …
การปิดสีโดยใช้ชนิดเรซินคอมโพสิตและความหนาที่แตกต่างกัน, กชรัตน์ นันทเสน
การปิดสีโดยใช้ชนิดเรซินคอมโพสิตและความหนาที่แตกต่างกัน, กชรัตน์ นันทเสน
Chulalongkorn University Theses and Dissertations (Chula ETD)
ความสวยงามในเรื่องสีของฟันเป็นสิ่งหนึ่งที่ผู้ป่วยให้ความสำคัญเมื่อมารับการรักษาทางทันตกรรม โดยการเปลี่ยนสีฟันด้วยสิ่งบูรณะฟันโดยตรง ซึ่งเป็นการบูรณะฟันโดยตรงในช่องปากโดยใช้เรซินคอมโพสิต เป็นทางเลือกในการรักษาที่มีความนิยมมากขึ้น เนื่องจากมีการทำอันตรายต่อฟันน้อยที่สุด แต่ความสามารถในการปิดสีของเรซินคอมโพสิตอาจมีความแตกต่างกันไปตามแต่ละชนิด ถ้าสามารถเลือกชนิดของเรซินคอมโพสิตที่ปิดสีได้ดีในความหนาที่น้อย ก็จะช่วยลดการสูญเสียโครงสร้างฟันได้ งานวิจัยนี้จึงมีวัตถุประสงค์เพื่อเปรียบเทียบสีภายหลังการบูรณะด้วยชนิดของเรซินคอมโพสิตที่แตกต่างกัน โดยการนำเรซินคอมโพสิต 3 ชนิด ได้แก่ เคลียร์ฟิลเอพีเอ็กซ์, เมต้าฟิลซีเอ็กซ์ และฟิลเท็คซีทูไฟว์ซีโร่ ที่มีความหนา 4 ระดับ ได้แก่ 0.5, 1, 1.5 และ 2 มิลลิเมตร มาเปรียบเทียบความสามารถในการปิดสี โดยวัดด้วยตามนุษย์และเครื่องสเปกโทรโฟโตมิเตอร์ และประเมินความแตกต่างโดยใช้การทดสอบแบบครัสคัล-วอลลิสและการวิเคราะห์ความแปรปรวนทางเดียว ผลการศึกษาพบความแตกต่างอย่างมีนัยสำคัญทางสถิติที่ระดับความเชื่อมั่นร้อยละ 95 ระหว่างกลุ่มเรซินคอมโพสิตและความหนาที่ต่างกัน กล่าวโดยสรุป เรซินคอมโพสิตชนิดเมต้าฟิลซีเอ็กซ์มีความสามารถในการปิดสีเข้มสุด A6 ได้ดีกว่าเรซินคอมโพสิตชนิดเคลียร์ฟิลเอพีเอ็กซ์และฟิลเท็คซีทูไฟว์ซีโร่ในทุกระดับความหนา โดยเรซินคอมโพสิตชนิดเมต้าฟิลซีเอ็กซ์ที่ความหนาประมาณ 1.5 – 2 มิลลิเมตร สามารถบูรณะฟันสี A6 ให้ได้สีฟันที่ระดับ A1
Evaluation Of Tensile Bond Strength Of Various Denture Relining Materials To Conventional And Cad/Cam Manufactured Denture Base Polymers, Pilipda Janyaprasert
Evaluation Of Tensile Bond Strength Of Various Denture Relining Materials To Conventional And Cad/Cam Manufactured Denture Base Polymers, Pilipda Janyaprasert
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study was to investigate the tensile bond strength (TBS) of autopolymerized, heat-polymerized, milled, and 3D printed denture base materials bonded to 2 acrylic-based and 2 silicone-based denture liners, both before and after thermocycling. Four different denture base materials (Palapress (PL), Vertex Rapid Simplified (VR), Smile CAM total prosthesis (SC), and NextDent denture 3D+ (ND)) bonded to 2 acrylic-based (GC Soft-Liner (GC) and Tokuyama Rebase II (RB)) and 2 silicone-based (Ufi Gel P (UP) and Sofreliner Tough M (ST)) denture liners were tested. Specimens (n=8) were divided into non-thermocycling and thermocycling groups. Data were analyzed using 2-way ANOVA and Tukey …
Oral And Dental Prostheses Status In Mild And Moderate Dementia Patients, Tunyatorn Ratanawatanasin
Oral And Dental Prostheses Status In Mild And Moderate Dementia Patients, Tunyatorn Ratanawatanasin
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study focused on understanding the oral health and dental prostheses status of patients with mild to moderate dementia at King Chulalongkorn Memorial Hospital. A total of 88 patients participated in this cross-sectional study, which utilized the Oral Health Assessment Tool (OHAT) and modified CDA score to evaluate the oral health of patients with a dementia diagnosis. The study revealed significant oral health issues among participants, particularly in terms of gum and oral tissue problems, and oral cleanliness. Although 45.5% of participants had at least 20 functional teeth, a high prevalence of dental decay was observed. Many of the fixed …
การเปลี่ยนแปลงคุณภาพชีวิตในมิติสุขภาพช่องปากและในมิติสุขภาพในผู้ป่วยที่ได้รับการรักษาทางทันตกรรมประดิษฐ์, ปิยอนงค์ วรรณขาว
การเปลี่ยนแปลงคุณภาพชีวิตในมิติสุขภาพช่องปากและในมิติสุขภาพในผู้ป่วยที่ได้รับการรักษาทางทันตกรรมประดิษฐ์, ปิยอนงค์ วรรณขาว
Chulalongkorn University Theses and Dissertations (Chula ETD)
การศึกษานี้เป็นการศึกษาไปข้างหน้าจากเหตุไปหาผลในผู้ป่วยเข้ารับการรักษารับการรักษาทางทันตกรรรมประดิษฐ์จำนวน 87 คน ผลลัพธ์ของการศึกษาคือคุณภาพชีวิตในมิติสุขภาพช่องปากและคุณภาพชีวิตในมิติสุขภาพ โดยใช้ดัชนีประเมินผลกระทบของสุขภาพช่องปากต่อสมรรถภาพในชีวิตประจำวันและเครื่องมือวัดคุณภาพชีวิตขององค์การอนามัยโลกฉบับย่อ ตามลำดับ ตัวแปรร่วม ได้แก่ ลักษณะทั่วไป สภาวะสุขภาพและสภาวะสุขภาพช่องปาก เก็บข้อมูลโดยการสัมภาษณ์ การตรวจในช่องปากและการศึกษาจากแฟ้มประวัติ หลังการแก้ไขฟันเทียมครั้งสุดท้าย 1 เดือน เก็บข้อมูลคุณภาพชีวิตในมิติสุขภาพช่องปากและคุณภาพชีวิตในมิติสุขภาพโดยการสัมภาษณ์ทางโทรศัพท์ ใช้การทดสอบของการทดสอบวิลคอกซันวิเคราะห์การเปลี่ยนแปลงของคะเเนน OIDP และ WHOQOL-BREF เวลาก่อนและหลังการรักษา ข้อมูลทั้งหมดวิเคราะห์ที่ระดับนัยสำคัญร้อยละ 5 ผลการศึกษาแสดงว่าหลังการรักษาผู้เข้าร่วมการศึกษามีคะแนน OIDP รวมลดลงอย่างมีนัยสำคัญทางสถิติ และคะแนน WHOQOL-BREF รวมเพิ่มขึ้นอย่างมีนัยสำคัญทางสถิติ โดยที่เวลาก่อนการรักษาปัจจัยที่ส่งผลต่อคะแนน OIDP รวมคือจำนวนฟันธรรมชาติและจำนวนคู่สบฟันหลัง ในขณะที่ปัจจัยที่ส่งผลต่อคะแนน WHOQOL-BREF รวมคือสถานภาพสมรสและความเพียงพอของรายได้ จึงสรุปได้ว่าภายหลังการรักษาทางทันตกรรมประดิษฐ์ผู้ป่วยมีคุณภาพชีวิตในมิติสุขภาพช่องปากและคุณภาพชีวิตในมิติสุขภาพดีขึ้น