Advertisement

Topics

In vitro evaluation of conventional and locking miniplate/screw systems for the treatment of mandibular angle fractures.

Summary of "In vitro evaluation of conventional and locking miniplate/screw systems for the treatment of mandibular angle fractures."

This in vitro study evaluated the influence of the type of miniplate and the number of screws installed in the proximal and distal segments on the stability and resistance of Champy's osteosynthesis in mandibular angle fractures. Sixty polyurethane hemimandibles with bone-like consistency were randomly assigned to four groups (n=15) and sectioned in the mandibular angle region to simulate fracture. The bone segments were fixed by different osteosynthesis methods using 2.0mm miniplates and 2.0mmx6mm monocortical screws. In groups 1 and 2, two conventional (G1) or locking (G2) screws were installed in each bone segment using a conventional (G1) or a locking (G2) straight miniplate; in groups 3 and 4, three conventional (G3) or locking (G4) screws were installed in the proximal segment and four conventional (G3) or locking (G4) screws were installed in the distal segment using a conventional (G3) or a locking (G4) seven-hole straight miniplate. The hemimandibles were loaded in compressive strength until a 4mm displacement occurred between the segments, vertically or horizontally. Locking plate/screw systems provided significantly greater resistance to displacement than conventional ones (p<.01). Locking miniplates offered more resistance than conventional miniplates. Long locking miniplates provided greater stability than short ones.

Affiliation

Department of Maxillofacial Surgery and Traumatology, University of Sagrado Coração, Bauru, Brazil.

Journal Details

This article was published in the following journal.

Name: International journal of oral and maxillofacial surgery
ISSN: 1399-0020
Pages:

Links

DeepDyve research library

PubMed Articles [39250 Associated PubMed Articles listed on BioPortfolio]

Locking Cap Designs Improve Fatigue Properties of Polyaxial Screws in Upper Extremity Applications.

This study sought to examine fatigue characteristics of two polyaxial locking screw designs: locking cap (LC) and cross-threaded (CT). The goal was to compare LC and CT implants at 0, 10, and 15 degre...

Screw stripping after repeated cortical screw insertion - can we trust the cancellous "bailout" screw?

During osteosynthesis standard non locking cortical screws often require reinsertion, raising concern over possible decrease in their effectiveness. This study aims to quantify that potential loss of ...

In Vitro Evaluation of Three Methods for the Retrieval of Fractured Screw Fragments from Dental Implants.

To compare the effectiveness of different methods of fractured screw fragment retrieval from dental implants, comparing a conventional method (use of an exploration probe and ultrasonic tips) with two...

Orthopedic Devices; Reclassification of Pedicle Screw Systems, Henceforth To Be Known as Thoracolumbosacral Pedicle Screw Systems, Including Semi-Rigid Systems. Final order.

The Food and Drug Administration (FDA) is issuing a final order to reclassify pedicle screw systems, a preamendments class III device (regulated under product code NKB), into class II (special control...

The Mechanical Effect of Rod Contouring on Rod-Screw System Strength in Spine Fixation.

Rod-screw fixation systems are widely used for spinal instrumentation. Although many biomechanical studies on rod-screw systems have been carried out, but the effects of rod contouring on the construc...

Clinical Trials [5401 Associated Clinical Trials listed on BioPortfolio]

Dynamic Internal Fixation of Femoral Neck Fractures

Evaluation of dynamic Plate-Screw-Systems for internal fixation after femoral neck fractures. Open Registry for Comparison of 1-screw-systems (DHS) with multi-screw-system Targon FN.

Clinical Outcome After Treatment of Patellar Fractures With Locking Plates

Depending on the fracture pattern of patellar fractures tension band wiring, interfragmentary screw fixation or combinations are common treatments. But there are several problems associate...

Evaluation of Handling and Possible Complications Related to the Newly Developed Angular Stable Locking System (ASLS)

In many cases, the existing locking bolts and screws in intramedullary nails do not provide sufficient stability. Due to the play between screw and nail, the reduction can be lost and the ...

Observational Patient Registry of Observational Patient Registry of the Dynamic Locking Screws

The purpose of this multi-center patient registry is to obtain first clinical results and to assess short and mid-term clinical outcome data of patients treated with DLS.

Accuracy of Navigation in Placement of Sacroiliac Screw

The purpose of this study is to compare the precision of computer-assisted navigation for hip screw implantation to conventional fixation without navigation.

Medical and Biotech [MESH] Definitions

An internationally recognized set of published rules used for evaluation of cancer treatment that define when tumors found in cancer patients improve, worsen, or remain stable during treatment. These criteria are based specifically on the response of the tumor(s) to treatment, and not on the overall health status of the patient resulting from treatment.

Therapeutic practices which are not currently considered an integral part of conventional allopathic medical practice. They may lack biomedical explanations but as they become better researched some (PHYSICAL THERAPY MODALITIES; DIET; ACUPUNCTURE) become widely accepted whereas others (humors, radium therapy) quietly fade away, yet are important historical footnotes. Therapies are termed as Complementary when used in addition to conventional treatments and as Alternative when used instead of conventional treatment.

The detection of long and short term side effects of conventional and traditional medicines through research, data mining, monitoring, and evaluation of healthcare information obtained from healthcare providers and patients.

Preclinical testing of drugs in experimental animals or in vitro for their biological and toxic effects and potential clinical applications.

The transfer of mammalian embryos from an in vivo or in vitro environment to a suitable host to improve pregnancy or gestational outcome in human or animal. In human fertility treatment programs, preimplantation embryos ranging from the 4-cell stage to the blastocyst stage are transferred to the uterine cavity between 3-5 days after FERTILIZATION IN VITRO.

Quick Search
Advertisement
 


DeepDyve research library

Relevant Topics

Osteoporosis
Osteoporosis is a disease in which the bones become extremely porous, are subject to fracture, and heal slowly, occurring especially in women following menopause and often leading to curvature of the spine from vertebral collapse. Follow and track&n...

Dentistry
Dentistry is the study, management and treatment of diseases and conditions affecting the mouth, jaw, teeth and their supporting tissues (Oxford Medical Dictionary) The work of a dentist ranges from regular patient check-up to orthodontics and surgery....


Searches Linking to this Article