Implant Body Displacement into Medullary Cavity of Mandible: A Case Report.

One serious complication in implant surgery is displacement of the implant body into the surrounding tissue. This occurs only rarely in the mandible, however. This report describes a case of an implant body displacing into the medullary cavity of the mandible and discusses this in reference to the literature.

Lightweight acrylic resin facial prosthesis for maxillofacial defects: a fabrication and retention method.

Extraoral maxillofacial rehabilitation for compromised or lost facial anatomy resulting from the surgical eradication of malignancy, trauma, or congenital anomalies is commonly accomplished with a silicone prosthesis. However, with increasing size and weight, a silicone prosthesis can lose retention. This report presents 2 patient treatments to introduce a fabrication and retention method for a lightweight acrylic resin facial prosthesis.

Human mandibular trabecular bone density correlation with mechanical strength: implications for implant dentistry.

Purpose: The prognosis of a dental implant depends on the mechanical properties of the bone. The preoperative diagnosis of bone quality has become more important, because the immediate loading procedure is now widely used, and a firm initial stability is required. Quantitative computed tomography (QCT) is an effective method of determining selectively the bone mineral density (BMD) of the trabecular bone mostly responsible for the survival of the implant.

Peri-implant bone density in senile osteoporosis-changes from implant placement to osseointegration.

Purpose: The aim of this study was to examine healing over time after implant body placement in a senile osteoporosis model and a control group.

Materials And Methods: In this study, 16-week-old male mice were used. The senile osteoporosis model consisted of senescence-accelerated prone 6 mice and the control group consisted of senescence-accelerated resistant 1 mice.

Students' opinion of a predoctoral implant training program.

Implant treatment today is highly predictable and provides valid restorative options for the completely or partially edentulous patient. In Japan, many dental care facilities have incorporated implant treatment, and such treatment is no longer rare. For predoctoral students, the educational environment related to implants is not always applicable in present clinical settings.

Chronological changes in the ultrastructure of titanium-bone interfaces: analysis by light microscopy, transmission electron microscopy, and micro-computed tomography.

Purposes: The objectives of this study were to chronologically examine the titanium-bone interfaces and to clarify the process of osseointegration using light microscopy, transmission electron microscopy (TEM), and micro-computed tomography (CT).

Materials And Methods: Experimental implants (Ti-coating plastic implants) were placed into tibiae of 8-week-old rats. Animals were sacrificed at 1 to 28 days after implant placement and prepared tissue specimens for a light microscope, a TEM, and micro-CT.

Effect on the amount of bone-implant contact when splinting immediate-loaded dental implants.

Purpose: Much attention has been focused on the immediate or early loading of implants with or without splinting. The purpose of this study was to evaluate the contact rate between bones and implants, with or without splinting.

Materials And Methods: Under general anesthesia, an 8-mm-deep cavity for a dental implant was drilled in the mandibular ridge of dogs where teeth had been extracted 4 months earlier.

Ultrastructure of the interface between titanium and surrounding tissue in rat tibiae--a comparison study on titanium-coated and -uncoated plastic implants.

Purposes: The purposes of this study were to prepare experimental titanium-coated plastic implants suitable for electron microscopy examination of the titanium-bone interface and the response of tissue surrounding titanium, and to histologically compare surrounding tissue responses in coated and uncoated implants.

Materials And Methods: Experimental plastic implants were prepared from a plastic rod coated with a thin film of titanium. Plastic implants without coatings were used as controls.