Hailan Feng

Anhui Medical University

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Dong Han

National Clinical Research Center for Digestive Diseases

Haochen Liu

China Pharmaceutical University

Miao Yu

National Clinical Research Center for Digestive Diseases

Sing‐Wai Wong

University of North Carolina at Chapel Hill

Yang Liu

National Clinical Research Center for Digestive Diseases

Hongshan Zhao

Peking University

Shaoxia Pan

Peking University

Yihong Liu

Zhengzhou People's Hospital

Tao Cai

Chongqing Medical University

Yixiang Wang

Peking University

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Peking University

223

Chinese Academy of Sciences

Stomatology Hospital

National Clinical Research Center for Digestive Diseases

Faculty of 1000 (United States)

Chinese Academy of Medical Sciences & Peking Union Medical College

Capital Medical University

Inserm

Zhejiang University

Sun Yat-sen University

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[Fracture reliability of zirconia all-ceramic crown according to zirconia coping design].

PubMed (2014)

Yihong Liu Yong Wang Qinghui Zhang Yuan Gao Hailan Feng

To study the fracture resistance and characteristics of the bi-layer zirconia all ceramic crowns according to the zirconia coping design using various experimental methods and to compare the results of the in vitro test with the clinical evaluation.The bi-layer zirconia all ceramic crowns were fabricated by the same method as used in clinical practice. Two different coping designs with/without zirconia marginal collar were used. All the samples were cemented onto corresponding resin dies. All the specimens were tested in the 2 groups with/without zirconia collar. The fracture load test was performed on 10 crowns from each group. Fracture strength was tested with a universal testing machine. The fracture modes and features of the failed crowns were observed with an integrated microscope and a field emission scanning electron microscope.The zirconia collar group showed higher fracture load than the group without zirconia collar. All the zirconia crowns failed with porcelain failure and without zirconia coping broken. The porcelain fracture modes were crack, chipping and delamination. The distribution of the different fracture modes in the groups was the same.The bi-layer zirconia crown with 2 mm zirconia marginal collar showed more fracture strength under once load. The fracture modes of the test specimens were the same as the clinical fracture bi-layer zirconia crowns, showing porcelain chipping and delamination.

Collar

Universal testing machine

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in vitro Study of a Novel Method to Repair Human Enamel

MRS Proceedings (2010)

Haifeng Chen Song Yun Yanjun Ge Yujing Yin Hailan Feng

Human tooth

10.1557/proc-1274-qq08-10

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Citations (1)

CELL BIOLOGY AND SIGNALING

Neuro-Oncology (2011)

F. Furnari Tim R. Fenton D. Nathanson C. P. de Alberquerque D. Kuga

10.1093/neuonc/nor148

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Citations (1)

Table of Contents

Journal of Prosthetic Dentistry (2022)

Sarah Lee Hitoshi Uchida Catherine E. Ovitt Xiaojiao Fu Jingwen Yang

Table (database)

10.1016/s0022-3913(22)00096-8

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Morphological analyses and a novelde novoDLX3mutation associated with tricho–dento–osseous syndrome in aChinese family

European Journal Of Oral Sciences (2015)

Yue Li Dong Han Hao Zhang Haochen Liu Sing‐Wai Wong

Tricho–dento–osseous ( TDO ) syndrome, an autosomal‐dominant disorder, affects the morphological appearance of the tooth enamel, hair, and bone. Previous studies have confirmed that mutations in the DLX 3 gene are responsible for TDO . In this study, we describe a C hinese patient with the typical traits of TDO – kinky hair, enamel hypoplasia, skull and jaw bones thickening, and sclerosis. Unfortunately, as a result of excessive attrition, we were unable to assess taurodontism. Examination of the tooth ground section showed a thin layer of enamel with no rods on the patient's tooth and abnormalities in T omes' granular layer and the dentinal tubules. Scanning electron microscopy and energy‐dispersive X ‐ray spectroscopy of the tooth enamel showed significant differences between the patient and the control individuals. A hair sample from the patient observed under a laser‐scanning microscope showed longitudinal grooves in the hair shaft. Dual‐energy X ‐ray absorptiometry measurement showed that the bone mineral density values of the patient's bones was much higher than normal. Finally, genetic analysis revealed a novel de novo missense mutation c.533 A > G (p. Q 178 R ) in the conserved homeodomain of the DLX 3 gene. This DLX 3 mutation is the sixth causative mutation for TDO to be identified so far.

Enamel hypoplasia

10.1111/eos.12197

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Citations (31)

Fracture and interfacial delamination origins of bilayer ceramic composites for dental restorations

Journal of the European Ceramic Society (2009)

Yihong Liu Hailan Feng Yiwang Bao Yan Qiu Ning Xing

Delamination

10.1016/j.jeurceramsoc.2009.11.019

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Citations (28)

[Mutation detection in ED1 gene in hypohidrotic ectodermal dysplasia (HED) families].

PubMed (2003)

Ying Wang Hongshan Zhao Xiaoxia Zhang Hailan Feng

To detect ED1 gene mutation in three hypohidrotic ectodermal dysplasia (HED) nuclear families.Peripheral blood samples were obtained from three different families of hypohidrotic ectodermal dysplasia. Genomic DNA was extracted. Polymerase chain reaction, direct sequencing and restriction enzyme reaction were performed to identify the mutations.Different missense mutation in ED1 gene were found in each family: C412G, A1201G and C1375T. Two of the mutations had not been previously reported.Mutations in the ED1 gene are responsible for the phenotypes of HED of the patients in the family.

Hypohidrotic ectodermal dysplasia

genomic DNA

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Title Page / Table of Contents

Cells Tissues Organs (2008)

J. Timothy Wright Thomas C. Hart P. Suzanne Hart Darrin Simmons Cynthia Suggs

Table (database)

Table of contents

10.1159/000184681

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Effects of RGD peptide grafting to titanium dental implants on the adhesion of human gingival fibroblasts and epithelial cells

Current Applied Physics (2005)

Baohong Zhao Weiming Tian Hailan Feng In-Seop Lee Fuzhai Cui

10.1016/j.cap.2005.01.002

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Citations (20)

Influence of different post core materials on the color of Empress 2 full ceramic crowns

Chinese Medical Journal (2006)

Jing Ge Xinzhi Wang Hailan Feng

Background For esthetic consideration, dentin color post core materials were normally used for all-ceramic crown restorations. However, in some cases, clinicians have to consider combining a full ceramic crown with a metal post core. Therefore, this experiment was conducted to test the esthetical possibility of applying cast metal post core in a full ceramic crown restoration. Methods The color of full ceramic crowns on gold and Nickel-Chrome post cores was compared with the color of the same crowns on tooth colored post cores. Different try-in pastes were used to imitate the influence of a composite cementation on the color of different restorative combinations. The majority of patients could not detect any color difference less than ▴E 1.8 between the two ceramic samples. So, ▴E 1.8 was taken as the objective evaluative criterion for the evaluation of color matching and patients' satisfaction. Results When the Empress 2 crown was combined with the gold alloy post core, the color of the resulting material was similar to that of a glass fiber reinforced resin post core (▴E = 0.3). The gold alloy post core and the try-in paste did not show a perceptible color change in the full ceramic crowns, which indicated that the color of the crowns might not be susceptible to change between lab and clinic as well as during the process of composite cementation. Without an opaque covering the Ni-Cr post core would cause an unacceptable color effect on the crown (▴E = 2.0), but with opaque covering, the color effect became more clinically satisfactory (▴E = 1.8). Conclusions It may be possible to apply a gold alloy post core in the Empress 2 full ceramic crown restoration when necessary. If a non-extractible Ni-Cr post core exists in the root canal, it might be possible to restore the tooth with an Empress 2 crown after covering the labial surface of the core with one layer of opaque resin cement.

Post and core

10.1097/00029330-200610020-00008

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Citations (16)