Immediate implantation of simple taper retentive implants in chronic apical infected teeth in the posterior region: a 5-year clinical observation.

Objectives: This study aims to evaluate the mid- and long-term clinical efficacies of simple taper retentive implants for immediate placement in chronic apical infected teeth in the posterior region.

Methods: A total of 36 patients with 41 simple taper retentive implants were included in the study conducted. These patients underwent immediate implant treatment for teeth with chronic apical infection in the posterior region.

Experimental study on implant-abutment locking force and abutment subsidence in a pure Morse taper connection implant system.

Objectives: This test aimed to investigate the factors affecting the locking force between the implant and abutment and the amount of abutment subsidence in pure Morse taper connection implant systems.

Methods: With reference to the Bicon implant abutment connection design, different types of implant specimens and their corresponding types of abutments were fabricated. The implant-abutment locking taper was uniformly 1.

[Effects of cortical bone thickness and jaw bone density on pain during implant surgery].

Purpose: To investigate the effects of different cortical bone thickness and jaw bone density at implant sites on intraoperative pain during implant surgery.

Methods: One hundred and eighty-seven patients(263 implant sites) who underwent implant placement surgery at the Fourth Affiliated Hospital of Nanchang University from August 2021 to August 2022 were selected to investigate the effects of different cortical bone thickness and jaw bone density HU values at implant sites on the anesthetic effect under local infiltration anesthesia with epinephrine in articaine. SPSS 26.

Peri-implant epidermoid cyst: A case report and literature analysis.

Background: A peri-implant cystic lesion is a rare finding, and to date most investigators have considered that its pathogenesis is caused by trauma and infection related to dental implantation. However, the pathogenesis of these cysts remains unclear and is recognized to have multifactorial origins.

Case Presentation: In February 2021, a 75-year-old male patient underwent implant restoration due to mobility of the left maxillary central incisor.

A case of intramandibular epidermoid cyst and literature analysis.

Epidermoid cysts are generally benign neoplastic lesions, the etiology of which is unclear and is mainly related to epithelial cells left in the tissues during the embryonic period and traumatically implanted in the tissues. The most common intraosseous sites are the phalanges and the skull. Epidermoid cysts occurring in the jaws are clinically rare.

Clinical efficacy of simple taper retentive implants in immediate posterior dental implantation for 5-7 years.

Objectives: This study aimed to evaluate the long-term clinical efficacy of simple taper retentive implants in the posterior dental area after immediate implantation for 5-7 years.

Methods: Selected from January 2015 to December 2017 in the Fourth Affiliated Hospital of Nanchang University dental clinic line tooth area immediately after the implant prosthesis, a total of 38 patients, 53 implants, were deep into (bone under 2 mm or higher) and the upper structure was repaired. In addition, after the completion of tracking observation of 60-90 months, the implant surrounding bone health was recorded and analyzed.

[Analysis of clinical effects and risk factors of short implant followed up for 7-9 years].

Purpose: To evaluate the long-term clinical efficacy of short implants and analyze the influencing factors of the survival rate.

Methods: A total of 178 patients who received implant therapy in the Department of Stomatology, the Fourth Affiliated Hospital of Nanchang University from January 2010 to December 2014 were selected, including 334 short implants of Bicon (implant length ≤6 mm). The basic condition, restoration design, short implant survival rate and complications were observed and analyzed.

Clinical observation of a narrow alveolar ridge in the anterior area with a simple taper retention implant.

Objectives: This study aims to determine the clinical effect of an external attachment implant, called JUST J1 MINI (hereafter referred to as J1 implant), with simple tonal retention on the narrow alveolar area of the anterior teeth (4.5-5.5 mm).

[Retrospective study on transcrestal sinus floor elevation with simultaneous implantation of short implants].

Objective: To explore the changes in bone height of the maxillary sinus floor at different sinus ridge heights after transcrestal sinus floor elevation (tSFE) with the simultaneous implantation of short implants.

Methods: A total of 74 Bicon short implants were implanted into 37 patients during the same period of maxillary sinus elevation. The residual bone height (RBH)<4 mm group has 43 sites, and the RBH≥4 mm group has 31 sites.

MiR-646 suppresses proliferation and metastasis of non-small cell lung cancer by repressing FGF2 and CCND2.

MicroRNA-646 (miR-646) has been implicated in several other cancers; however, its functional mechanism in non-small cell lung cancer (NSCLC) remains unclear. In this study, we observed the downregulation of miR-646 expression in NSCLC tissues and cell lines. Low-level expression of miR-646 was associated with metastasis and stage of NSCLCs.

An experimental model for induction of lung cancer in rats by Chlamydia pneumoniae.

Objective: To assess induction effects of Chlamydia pneumoniae (Cpn) on lung cancer in rats.

Methods: A lung cancer animal model was developed through repeated intratracheal injection of Cpn (TW-183) into the lungs of rats, with or without exposure to benzo(a)pyrene (Bp). Cpn antibodies (Cpn-IgA, -IgG, and -IgM) in serum were measured by microimmunofluorescence.