Combined use of xenogeneic bone substitute material covered with a native bilayer collagen membrane for alveolar ridge preservation: A randomized controlled clinical trial.

Aim: The aim of this split-mouth randomized controlled study was to evaluate radiographic dimensional changes after tooth extraction in posterior sites treated with a ridge preservation technique or left for spontaneous healing.

Materials And Methods: In a total of 18 patients, tooth extraction in posterior sites of the upper and lower jaw was performed in a split-mouth design. The post-extraction sockets were randomly assigned to the following two treatment modalities: deproteinized bovine bone mineral (DBBM) with 10% collagen (DBBM-C) covered with a native bilayer collagen membrane (NBCM) (test group) and spontaneous healing (control group).

Minimally Invasive Crestal Sinus Lift Technique and Simultaneous Implant Placement.

Objective: To evaluate the effectiveness and clinical results of a new crestal sinus lift technique used to elevate the sinus floor simultaneously with bone grafts and implant placement.

Methods: Eleven patients underwent this crestal sinus lift technique performed using an SCA KIT. The mean residual bone height was 6.

[A minimally invasive extraction technique using Benex Extraction System in flapless immediate implant placement in anterior teeth].

Purpose: To evaluate the feasibility and clinical outcomes of an atraumatic extraction technique using Benex Extraction System in flapless immediate implant placement in anterior teeth.

Methods: Twenty-five patients with single hopeless anterior maxillary teeth were enrolled in the study. The involved teeth were extracted using Benex Extraction System and implants were immediately placed in a flapless way.

[A novel technique to preserve the alveolar ridge width following tooth extraction in the maxillary frontal area].

Objective: To introduce a novel ridge preservation technique with micro-titanium plate avoiding the use of bone grafting materials, and evaluate the potential horizontal bone preservation effect of this new technique, applied on single maxillary central incisors after tooth extraction for future implant restoration.

Methods: Nine patients (six women and three men), mean age (26.0 ± 5.

A New Technique for Minimally Invasive Maxillary Lateral Sinus Augmentation: a Case Report.

Numerous techniques are described for lateral sinus augmentation, in order to expand bone volume, either by a crestal or lateral approach. A successful surgical procedure is determined by a number of factors. It is reported that different techniques for sinus augmentation have a high percentage of success, but presents a number of intraoperative and postoperative complications such as the Schneiderian membrane perforation and a long operating time.

[Computer-assisted implant restoration of free-end partially edentulous mandible with severe vertical bone deficiency].

Objective: To evaluate the applicability, accuracy and clinical outcome of the computer assisted design and computer assisted manufacture (CAD & CAM) tooth-supported implant surgical guide in the mandibular free-end partially edentulous patients with insufficient vertical bone height.

Methods: According to the inclusion criteria, 3 patients (2 women, and 1 man) with the mean age of 45 years (from 44 to 46 years) with 10 implant sites were involved in this study. With the help of Computer-assisted-design software to plan and simulate the surgical strategies, the implant surgical guides were fabricated via the rapid prototyping technique, then the guided implant placement was implemented, finally the post-surgical evaluations were accomplished by the clinical and radiographic examinations.

[Normal occlusion study: using T-Scan III occlusal analysis system].

Objective: To investigate the normal occlusal force distribution and the characteristics of the occlusion time at different occlusion position using T-Scan III occlusal analysis system.

Methods: Fifty-three volunteers with normal occlusion, including 29 males and 24 females, were included in this study. The average age was (25.

[Influence of the placing depth of implants with platform switching on the marginal bone level in the posterior mandible: a clinical study].

Objective: The purpose of this study was to evaluate the influence of the placing depth of the implants with platform switching (Ankylos) on the marginal bone remodeling, by means of radiological observation.

Methods: 111 Ankylos implants in the posterior mandible from 46 patients (20 male and 27 female) were enrolled in this study. Followed up by 58.

[Measurement and analysis of smile line of 62 Han-Chinese].

Objective: To analyze smile features in maximum lip-dynamic in Chinese.

Methods: Sixty-two Han-Chinese, travelling in Germany, with a mean age of 28.5 years were enrolled and photographed.

Multidisciplinary management of congenitally missing teeth with osseointegrated dental implants: a long-term report.

Objective: To describe a multidisciplinary approach to ensure optimal treatment and timing of treatment for these patients.

Methods: Ten patients with congenital missing teeth were treated with dental implants with a multidisciplinary approach, including orthodontics, prosthodontics, and/or orthognathic surgery, from 1997 to 2006 in the Department of Implant Dentistry, Peking University, Hospital of Stomatology. All patients were followed up over five years.

[Implant restoration for patients with congenital missing teeth].

Objective: To evaluate the treatment plan, clinical outcome and related problems in patients with congenital missing teeth.

Methods: From November 2000 to February 2009, thirty seven patients with congenital missing teeth underwent thorough diagnostic workup, treatment planning and an interdisciplinary approach to ensure optimal treatment in Department of Implant Dentistry, Peking University, School and Hospital of Stomatology. A standard follow-up protocol was conducted for all the patients.

[Clinical study of the application of non-invasive porcelain veneer to improve the aesthetic effects in maxillary anterior area].

Objective: To evaluate the clinical results of application of non-invasive porcelain veneer to reduce the black triangle of implant and adjacent teeth and to improve the aesthetic effect in the maxillary anterior area.

Methods: The study included 10 patients (Male: 4, Female: 6; average age: 41.5) accessioned during May 2007 to August 2009 in Peking University School of Stomatology.

[Clinical study of tissue preservation of extraction socket with Bio-Oss collagen and acellular dermal matrix].

Objective: To evaluate the clinical and histological results of extraction socket preservation using Bio-Oss collagen and acellular dermal matrix (ADM).

Methods: From November 2005 to June 2006, a total of 11 cases underwent extraction socket preservation with Bio-Oss collagen and ADM in 14 extraction sites. Ten cases with 10 teeth undergoing extraction without bone graft served as control group.

[Clinical study of application of platform switching to dental implant treatment in esthetic zone].

Objective: To evaluate the clinical results of dental implant treatment with platform switching technique in esthetic zone and to investigate its technical characteristics.

Methods: Seventeen patients who were partially edentulous in esthetic zone were included and received a total of 26 Frialit-2 system implants in Center of Dental Implantation, Peking University School and Hospital of Stomatology from January to December 2001, and the platform switching technique was applied. The mean follow-up time was 56.

[Clinical study of sinus elevation by water balloon and implant placement].

Objective: To evaluate the clinical results and technique of minimally invasive sinus membrane water balloon elevation followed by bone augmentation and implant placement simultaneously.

Methods: From May 2006 to November 2007, 31 patients (male: 16, female: 15; mean age: 41.2 +/- 11.

[Clinical study of free palatal connective tissue grafts for enhancement of periimplant soft tissue topography in maxillary esthetic area].

Objective: To evaluate the results and clinical characteristics of free palatal connective tissue graft in closing of immediate implant wound and reconstructing of labial soft tissue topography.

Methods: A total of 285 cases underwent free palatal connective tissue graft transplantation in the implant treatment from June 1997 to June 2006 were included in this study. All cases were followed up for at least one year (1 to 8 years).

[Clinical study on utilizing free palatal mucosa flap in reconstructing peri-implant attached soft tissue].

Objective: To evaluate the results and clinical characteristics of free palatal mucosa flap in reconstructing peri-implant attached soft tissue.

Methods: 126 cases with partial edentulous or edentulous were undergone soft tissue reconstruction and implant treatment from July 1997 to June 2005. A total of 388 implants were placed.

[Application of implant-supported telescopic overdenture in edentulous cases].

Objective: To evaluate clinical results of implant supported telescopic overdenture.

Methods: 21 patients with edentulous jaws underwent telescopic overdenture restoration. A total of 28 prostheses were fabricated.

[Clinical study of periocline on peri-implantitis treatment].

Objective: To evaluate the clinical outcome and the effects of treating peri-implantitis with periocline.

Methods: Thirty-two sites in 32 implants with peri-implantitis were treated with periocline. The parameters including plaque index, probing depth (PD) of pocket, sulcular bleeding index (SBI) were measured at baseline, 1, 3, 6 and 12 weeks after treatment and followed up for 6 months.

[Evaluation of clinical results on osteotome sinus floor elevation and dental implant placement (122 cases report)].

Objective: To evaluate the clinical results of osteotome sinus floor elevation technique in the posterior maxillary region.

Methods: A total of 122 patients underwent osteotome sinus floor elevation from July 1998 to July 2004. Forty-eight cases were male and 74 were female.

[A clinical retrospective study of 10 years implant results].

Objective: To evaluate ten years clinical results of dental implant treatment.

Methods: A total of 5,590 endosseous implants were consecutively placed from Aug. 1994 to Aug 2004 in Center of Implantation, Peking University School and Hospital of Stomatology.