Publication date: Available online 6 March 2017
Source:Dental Materials
Author(s): Yutao Jian, Zi-hua He, Li Dao, Michael V. Swain, Xin-ping Zhang, Ke Zhao
ObjectiveTo investigate and characterize the distribution of fabrication defects in bilayered lithium disilicate glass-ceramic (LDG) crowns using micro-CT and 3D reconstruction.MethodsTen standardized molar crowns (IPS e.max Press; Ivoclar Vivadent) were fabricated by heat-pressing on a core and subsequent manual veneering. All crowns were scanned by micro-CT and 3D reconstructed. Volume, position and sphericity of each defect was measured in every crown. Each crown was divided into four regions—central fossa (CF), occlusal fossa (OF), cusp (C) and axial wall (AW). Porosity and number density of each region were calculated. Statistical analyses were performed using Welch two sample t-test, Friedman one-way rank sum test and Nemenyi post-hoc test. The defect volume distribution type was determined based on Akaike information criterion (AIC).ResultsThe core ceramic contained fewer defects (p<0.001) than the veneer layer. The size of smaller defects, which were 95% of the total, obeyed a logarithmic normal distribution. Region CF showed higher porosity (p<0.001) than the other regions. Defect number density of region CF was higher than region C (p<0.001) and region AW (p=0.029), but no difference was found between region CF and OF (p>0.05). Four of ten specimens contained the largest pores in region CF, while for the remaining six specimens the largest pore was in region OF.SignificanceLDG core ceramic contained fewer defects than the veneer ceramic. LDG strength estimated from pore size was comparable to literature values. Large defects were more likely to appear at the core–veneer interface of occlusal fossa, while small defects also distributed in every region of the crowns but tended to aggregate in the central fossa region. Size distribution of small defects in veneer obeyed a logarithmic normal distribution.
http://ift.tt/2lWE1ce
Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
Αρχειοθήκη ιστολογίου
-
►
2023
(391)
- ► Φεβρουαρίου (200)
- ► Ιανουαρίου (191)
-
►
2022
(2843)
- ► Δεκεμβρίου (161)
- ► Σεπτεμβρίου (219)
- ► Φεβρουαρίου (264)
- ► Ιανουαρίου (280)
-
►
2021
(5625)
- ► Δεκεμβρίου (231)
- ► Σεπτεμβρίου (345)
- ► Φεβρουαρίου (620)
-
►
2020
(2065)
- ► Δεκεμβρίου (535)
- ► Σεπτεμβρίου (222)
- ► Φεβρουαρίου (28)
-
►
2019
(9608)
- ► Δεκεμβρίου (19)
- ► Σεπτεμβρίου (54)
- ► Φεβρουαρίου (3791)
- ► Ιανουαρίου (3737)
-
►
2018
(69720)
- ► Δεκεμβρίου (3507)
- ► Σεπτεμβρίου (3851)
- ► Φεβρουαρίου (8116)
- ► Ιανουαρίου (7758)
-
▼
2017
(111579)
- ► Δεκεμβρίου (7718)
- ► Σεπτεμβρίου (7549)
-
▼
Μαρτίου
(11966)
-
▼
Μαρ 08
(757)
- Managing the oral side effects of medications used...
- Genetics of Pheochromocytomas and Paragangliomas
- Mite allergen extracts and clinical practice
- Mechanisms of anaphylaxis beyond classically media...
- Information for Readers
- Editorial Board
- AAAAI/ACAAI Joint Venom Extract Shortage Task Forc...
- Sublingual immunotherapy
- Asthma–chronic obstructive pulmonary disease overl...
- Depression symptoms and lost productivity in chron...
- An obstructive sleep apnea primer
- Is it time for asthma action plan apps?
- Instructions for Authors
- Table of Contents
- Specificity and reproducibility of nasal biomarker...
- Decontamination tips
- Mite allergen extracts and clinical practice
- Information for Readers
- Mechanisms of anaphylaxis beyond classically media...
- Editorial Board
- AAAAI/ACAAI Joint Venom Extract Shortage Task Forc...
- Asthma–chronic obstructive pulmonary disease overl...
- An obstructive sleep apnea primer
- Sublingual immunotherapy
- Depression symptoms and lost productivity in chron...
- Is it time for asthma action plan apps?
- Instructions for Authors
- Table of Contents
- Specificity and reproducibility of nasal biomarker...
- Tumor volume as an independent predictive factor o...
- Tumor volume as an independent predictive factor o...
- Design, synthesis and biological evaluation of 7-m...
- Design and Synthesis of Pyrazolo[3,4-d]Pyrimidines...
- Nodular colloid milium mimicking keloid
- Vestibular impairment in Multiple Chemical Sensiti...
- Derealization during utricular stimulation.
- Auditory contributions to maintaining balance.
- Outcome evaluation of the dizziness handicap inven...
- The usefulness of the video head impulse test in c...
- Vertical head translation impairs dynamic visual a...
- The horizontal computerized rotational impulse test.
- Gaze stabilization and dynamic visual acuity in pe...
- Vestibular paroxysmia: Diagnostic criteria.
- Keyword Index Volume 26 (2016).
- Author Index Volume 26 (2016).
- Microsurgery approaches for local drug delivery to...
- Nodular colloid milium mimicking keloid
- Postnatal MRI for CDH: A pictorial review of late-...
- MR imaging of intestinal angioedema related to ang...
- Comparison of two-dimensional synthesized mammogra...
- Architectural Overlap between Benign Endocervix an...
- Edmondson-Steiner grade: a crucial predictor of re...
- Roles of microRNAs in cancer associated fibroblast...
- Microbe Hunting Hits Home
- Microbes and Diet-Induced Obesity: Fast, Cheap, an...
- MAP Kinase Signaling Pathways: A Hub of Plant-Micr...
- Exercising Restraint
- A Microbiome Foundation for the Study of Crohn’s D...
- Generation of a Live Attenuated Influenza Vaccine ...
- Attenuated Vaccines for Augmented Immunity
- From Striking Out to Striking Gold: Discovering th...
- Marking a Decade with Storytelling
- DAI Another Way: Necroptotic Control of Viral Infe...
- Malaria Parasite Invasion: Achieving Superb Resolu...
- Trained Immunity: An Ancient Way of Remembering
- What to Expect When You’re Expecting Zika
- Life-Saving Degeneracy in the Human Immune System
- A Feast of Malaria Parasite Genomes
- Unsweetened IgG Is Bad for Dengue Patients
- West African Ebola Virus Strains: Unstable and Rea...
- A Sour Relationship between BabA and Lewis b
- Pregnancy-Related Immune Adaptation Promotes the E...
- Betacoronavirus Adaptation to Humans Involved Prog...
- Effect of Androgen Supplementation on 24-Hour Acti...
- Pressure Injury Prevalence and the Rate of Hospita...
- Context for Practice: Leakage From the Ostomy Pouc...
- Validation of a Model for Predicting Pressure Inju...
- Attitudes of Nursing Students About Pressure Injur...
- Development of a Survey to Explore Factors Influen...
- Prevention of Medical Device-Related Pressure Inju...
- Pressure Mapping in Elderly Care: A Tool to Increa...
- Current Techniques for Postoperative Monitoring of...
- View From Here: Formal and Informal Leadership Tra...
- Psychological and Physical Environmental Factors i...
- Differences in Ostomy Pouch Seal Leakage Occurrenc...
- Conservative Measures for Managing Constipation in...
- Incidence and Predictors of Incontinence-Associate...
- Clinical Evaluation of a Skin Protectant for the M...
- Psychological and Physical Environmental Factors i...
- Medical Adhesive-Related Skin Injury Following Eme...
- WOCN(R)-Accredited Professional Education Programs.
- Wound Versus Foot Care: Is There a Difference?.
- Metabolomics through the lens of precision cardiov...
- G protein-coupled calcium-sensing receptor is a cr...
- Surface engineering of semiconducting polymer nano...
- Weitere Definitionen und Schreibweisen für die Wun...
- Ultra-strong metals created in a smash
- "J Korean Neurosurg Soc"[jour]; +20 new citations
- SOP – Umgang mit multiresistenten Erregern auf der...
- Investigation on the association between thyroid t...
-
▼
Μαρ 08
(757)
- ► Φεβρουαρίου (10753)
- ► Ιανουαρίου (10529)
-
►
2016
(16402)
- ► Δεκεμβρίου (7478)
- ► Φεβρουαρίου (900)
- ► Ιανουαρίου (1250)
! # Ola via Alexandros G.Sfakianakis on Inoreader
Η λίστα ιστολογίων μου
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Αρχειοθήκη ιστολογίου
-
►
2023
(391)
- ► Φεβρουαρίου (200)
- ► Ιανουαρίου (191)
-
►
2022
(2843)
- ► Δεκεμβρίου (161)
- ► Σεπτεμβρίου (219)
- ► Φεβρουαρίου (264)
- ► Ιανουαρίου (280)
-
►
2021
(5625)
- ► Δεκεμβρίου (231)
- ► Σεπτεμβρίου (345)
- ► Φεβρουαρίου (620)
-
►
2020
(2065)
- ► Δεκεμβρίου (535)
- ► Σεπτεμβρίου (222)
- ► Φεβρουαρίου (28)
-
►
2019
(9608)
- ► Δεκεμβρίου (19)
- ► Σεπτεμβρίου (54)
- ► Φεβρουαρίου (3791)
- ► Ιανουαρίου (3737)
-
►
2018
(69720)
- ► Δεκεμβρίου (3507)
- ► Σεπτεμβρίου (3851)
- ► Φεβρουαρίου (8116)
- ► Ιανουαρίου (7758)
-
▼
2017
(111579)
- ► Δεκεμβρίου (7718)
- ► Σεπτεμβρίου (7549)
-
▼
Μαρτίου
(11966)
-
▼
Μαρ 08
(757)
- Managing the oral side effects of medications used...
- Genetics of Pheochromocytomas and Paragangliomas
- Mite allergen extracts and clinical practice
- Mechanisms of anaphylaxis beyond classically media...
- Information for Readers
- Editorial Board
- AAAAI/ACAAI Joint Venom Extract Shortage Task Forc...
- Sublingual immunotherapy
- Asthma–chronic obstructive pulmonary disease overl...
- Depression symptoms and lost productivity in chron...
- An obstructive sleep apnea primer
- Is it time for asthma action plan apps?
- Instructions for Authors
- Table of Contents
- Specificity and reproducibility of nasal biomarker...
- Decontamination tips
- Mite allergen extracts and clinical practice
- Information for Readers
- Mechanisms of anaphylaxis beyond classically media...
- Editorial Board
- AAAAI/ACAAI Joint Venom Extract Shortage Task Forc...
- Asthma–chronic obstructive pulmonary disease overl...
- An obstructive sleep apnea primer
- Sublingual immunotherapy
- Depression symptoms and lost productivity in chron...
- Is it time for asthma action plan apps?
- Instructions for Authors
- Table of Contents
- Specificity and reproducibility of nasal biomarker...
- Tumor volume as an independent predictive factor o...
- Tumor volume as an independent predictive factor o...
- Design, synthesis and biological evaluation of 7-m...
- Design and Synthesis of Pyrazolo[3,4-d]Pyrimidines...
- Nodular colloid milium mimicking keloid
- Vestibular impairment in Multiple Chemical Sensiti...
- Derealization during utricular stimulation.
- Auditory contributions to maintaining balance.
- Outcome evaluation of the dizziness handicap inven...
- The usefulness of the video head impulse test in c...
- Vertical head translation impairs dynamic visual a...
- The horizontal computerized rotational impulse test.
- Gaze stabilization and dynamic visual acuity in pe...
- Vestibular paroxysmia: Diagnostic criteria.
- Keyword Index Volume 26 (2016).
- Author Index Volume 26 (2016).
- Microsurgery approaches for local drug delivery to...
- Nodular colloid milium mimicking keloid
- Postnatal MRI for CDH: A pictorial review of late-...
- MR imaging of intestinal angioedema related to ang...
- Comparison of two-dimensional synthesized mammogra...
- Architectural Overlap between Benign Endocervix an...
- Edmondson-Steiner grade: a crucial predictor of re...
- Roles of microRNAs in cancer associated fibroblast...
- Microbe Hunting Hits Home
- Microbes and Diet-Induced Obesity: Fast, Cheap, an...
- MAP Kinase Signaling Pathways: A Hub of Plant-Micr...
- Exercising Restraint
- A Microbiome Foundation for the Study of Crohn’s D...
- Generation of a Live Attenuated Influenza Vaccine ...
- Attenuated Vaccines for Augmented Immunity
- From Striking Out to Striking Gold: Discovering th...
- Marking a Decade with Storytelling
- DAI Another Way: Necroptotic Control of Viral Infe...
- Malaria Parasite Invasion: Achieving Superb Resolu...
- Trained Immunity: An Ancient Way of Remembering
- What to Expect When You’re Expecting Zika
- Life-Saving Degeneracy in the Human Immune System
- A Feast of Malaria Parasite Genomes
- Unsweetened IgG Is Bad for Dengue Patients
- West African Ebola Virus Strains: Unstable and Rea...
- A Sour Relationship between BabA and Lewis b
- Pregnancy-Related Immune Adaptation Promotes the E...
- Betacoronavirus Adaptation to Humans Involved Prog...
- Effect of Androgen Supplementation on 24-Hour Acti...
- Pressure Injury Prevalence and the Rate of Hospita...
- Context for Practice: Leakage From the Ostomy Pouc...
- Validation of a Model for Predicting Pressure Inju...
- Attitudes of Nursing Students About Pressure Injur...
- Development of a Survey to Explore Factors Influen...
- Prevention of Medical Device-Related Pressure Inju...
- Pressure Mapping in Elderly Care: A Tool to Increa...
- Current Techniques for Postoperative Monitoring of...
- View From Here: Formal and Informal Leadership Tra...
- Psychological and Physical Environmental Factors i...
- Differences in Ostomy Pouch Seal Leakage Occurrenc...
- Conservative Measures for Managing Constipation in...
- Incidence and Predictors of Incontinence-Associate...
- Clinical Evaluation of a Skin Protectant for the M...
- Psychological and Physical Environmental Factors i...
- Medical Adhesive-Related Skin Injury Following Eme...
- WOCN(R)-Accredited Professional Education Programs.
- Wound Versus Foot Care: Is There a Difference?.
- Metabolomics through the lens of precision cardiov...
- G protein-coupled calcium-sensing receptor is a cr...
- Surface engineering of semiconducting polymer nano...
- Weitere Definitionen und Schreibweisen für die Wun...
- Ultra-strong metals created in a smash
- "J Korean Neurosurg Soc"[jour]; +20 new citations
- SOP – Umgang mit multiresistenten Erregern auf der...
- Investigation on the association between thyroid t...
-
▼
Μαρ 08
(757)
- ► Φεβρουαρίου (10753)
- ► Ιανουαρίου (10529)
-
►
2016
(16402)
- ► Δεκεμβρίου (7478)
- ► Φεβρουαρίου (900)
- ► Ιανουαρίου (1250)
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου