[Comparison of short-term clinical effect and assessment of influencial factors around single-tooth in the aesthetic area: immediate implant placement versus delayed implant placement].

Purpose: To compare the short-term clinical effect and to assess the influencial factors of immediate implant placement and delayed implant placement around single-tooth implant in the aesthetic area.

Methods: A total of 114 patients requiring a single-tooth implant in the aesthetic area were reviewed at Center for Implant Dentistry of Stomatological Hospital of China Medical University. They were divided into immediate implant group and delayed implant group.

[A clinical retrospective analysis of dental implants replaced in previously failed sites].

Purpose: To evaluate the clinical outcomes as well as related factors of dental implants replaced in previously failed sites.

Methods: A total of 12 patients (15 implants) who received replacement in previously failed sites during January 2005 to December 2011 were included. Outcomes of redo-implants were collected and clinical data was recorded and analyzed regarding risk factors related to redo-implants' survival using SPSS13.

[An assessment of different crown-to-implant ratio for implant teeth in the posterior region over 5 years].

Purpose: To evaluate the influence of crown-to-implant ratio (C/I ratio) on the results of restoration in the posterior region.

Methods: From January 2007 to January 2012,119 patients with 208 ITI implants in the posterior region were followed up for 6-66 months. Implant restorations were divided into three groups according to their respective clinical C/I ratios after noble porcelain-fused-to-mental crown restoration: C/I ≤1,1 View Article and Find Full Text PDF

[Implant-supported overdenture after pectoralis major myocutaneous flap reconstruction of tongue/floor of the mouth cancer:a case report].

Patients with oral cancer, undergoing ablative surgery, were left with severe deformities and dysfunction. Although the defect can be repaired by flap transplantation, there were still difficulties to restore normal oral structure and function of the oral cavity. In these instances, rehabilitation of mastication and occlusion is of the utmost importance.

Histomorphometrical and clinical study of connective tissue around titanium dental implants with porous surfaces in a canine model.

Connective tissue (CT) reactions and collagen fiber orientation were evaluated on titanium implants with porous surfaces made by a laser method. Three groups in which the diameters of pores were 10 ± 5 µm, 40 ± 5 µm, and 70 ± 5 µm were involved in this test, together with a machined group as control. A total of 24 implants were randomly placed in mandibles after 3 months of premolars and the first molar extraction in beagle dogs.

[Effect of HA/TiO2 coating titanium surface on the growth of MG63].

Purpose: To evaluate the bioactivity of titanium surface treated by micro-arc oxidation (MAO) combined with ion beam assisted deposition (IBAD).

Methods: Titanium surfaces were treated by machined(S0), micro-arc oxidation(S1) and micro-arc oxidation combined with IBAD(S2), respectively. The topography and roughness of surfaces were determined by profilometer, and the bioactivity of the surface was evaluated by CLSM, MTT assay and ALP activity of cells.

[The development and collagen ingredients analysis of submandibular gland acellular matrix].

Purpose: To develop submandibular gland acellular matrix and observe its structure and analyze its histological ingredients.

Methods: The fresh submandibular glands of SD mice were cell-extracted by chemical detergent and histological ingredients were analyzed by immunohistochemistry.

Results: Submandibular gland cells disappeared, matrix ingredients appeared network structure under microscopy.

[Effects of epidermal growth factor on calciumion and cAMP in the ductal cells of submandibular glands].

Purpose: To study the effects of EGF on Ca(2+) and cAMP in the ductal cells of rat SMG.

Methods: Fluorometric technique and radioimmunological technique were used to investigate the dynamic changes of Ca(2+) and cAMP in the ductal cells. The data were analysed statistically by t test.

[The development and ultrastructure study of acellular submandibular gland scaffold].

Purpose: To develop nature acellular submandibular gland scaffold materials and observe its ultrastructures.

Methods: The fresh submandibular glands of SD rats were cell-extracted by chemical detergent and observed with transmission and scanning electron microscope.

Results: Submandibular gland cells were dissolved and destroyed under transmission electron microscope.

[Restoration of deformities caused by complex fracture of the orbit region and adjacent cranio-maxillofacial fracture].

Objective: In order to improve the diagnosis and treatment of the complex fracture of the orbit region and adjacent cranio-maxillofacial fracture.

Methods: 73 cases with blowout fracture of the orbit and adjacent cranio-maxillofacial fracture in recent years were retrospectively analyzed and comparied with different methods of treatment. All cases had undertaken CT examinations.