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Biomedical subjects

L R Guerra

Publications and source records attributed to L R Guerra.

At least 19 recordsLinked to original sources
PubMed2000

Clear acrylic resin device for orientation and placement of a small facial prosthesis.

A small-sized facial prosthesis can be difficult to orient accurately in correct relationship to a defect. This problem may be reduced by embedding a magnet in the prosthesis and constructing a magnetic holding device from clear acrylic resin. This device can be used as a stand during adhesive application to reduce adhesive contamination and acts as orientation guide during prosthesis placement.

Acrylic Resins↗
PubMed1997

Aesthetic considerations for maxillary obturators retained by implants.

Maxillary obturators are prostheses used to replace maxillary tissues, missing congenitally or removed by trauma or tumor ablative surgery. These prostheses are used to restore function (speech, swallowing, and mastication) and aesthetics. A considerable number of edentulous patients have difficulty in retaining this type of prosthesis. Utilization of osseointegrated dental implants is a significant adjunct in treating these cases, but it must be undertaken with careful planning to ensure predictable aesthetic results. The learning objective of this article is to discuss the technique of designing aesthetic maxillary prostheses supported by osseointegrated dental implants. The discussion includes indications and contraindications, and a postcarcinoma surgery case is used to illustrate the clinical procedure.

Carcinoma, Squamous Cell↗
PubMed1995

A multiple tray technique for implant-retained orbital prostheses.

The use of implants in retaining orbital prostheses has gained favor in recent years. Not all patients may be candidates for use of medical adhesives or anatomic retention as advocated by some. Osseointegrated implants offer an alternative method for retaining an orbital prosthesis. Because of the confining nature of an orbital defect, it may be difficult to reproduce the spatial arrangement of implants accurately with one impression. The technique presented here accomplishes the objectives of minimal trauma to the tissues, accuracy, and elimination of consecutive impression technique.

Humans↗
PubMed1994

Cancer education curriculum at the Louisiana State University School of Dentistry.

The cancer education curriculum at Louisiana State University School of Dentistry provides students didactic and experiential learning throughout their dental training. Freshman are presented concepts of early detection of cancer in an oral diagnosis course. Later courses in oral diagnosis, medicine, and pathology include diagnostic and treatment decision making and rehabilitative information. Junior students attend a head-and-neck-tumor board composed of dentists and physicians that decides cancer treatment and rehabilitation. Juniors also participate in a biopsy service that includes observing or performing the biopsy, examining the tissue microscopically, and reporting their findings. Additionally, a required, medical and dental, multidisciplinary course in oral oncology provides instruction in diagnosis, treatment, and rehabilitation of cancer patients. Seniors participate in an oral cancer screening service as part of their community dentistry rotation. The postgraduate dental programs and the dental hygiene programs also participate in this curriculum.

Biopsy↗
PubMed1994

Implant reconstruction of a facial trauma patient: clinical report.

Dental implants can be used for the replacement of lost teeth as a result of trauma, even in complex cases with extensive loss of hard and soft tissues. Cooperation between the surgeon and restorative dentist is essential. The sequence of steps each team member must take to reach the definitive prosthesis stage must be clearly defined during treatment planning. A clinical report is presented.

Adolescent↗
PubMed1992

Tissue-supported implant overdentures.

Overdenture techniques can be modified for use with implants. Generally the implants, which replace the tooth roots, can be placed in a position to permit optimum retention and stability as well as enhancing esthetics. Bony undercuts, which at times are present with the retention of tooth roots, are not a problem when using implants. Various retentive schemes are available to retain the prosthesis and can be matched to the individual needs of patients in regard to retention, stability, and the ability to insert and remove prostheses. Two implants can adequately support an overdenture. The superstructure must be designed to enable the patient to maintain a healthy oral environment. The patient must understand and be able to perform required oral hygiene procedures. The use of overdentures over implants affords the dentist another option in meeting the needs of the patients.

Dental Clasps↗
PubMed1992

Hydroxyapatite-coated implants in maxillofacial prosthetics.

The use of implants provides a secure, comfortable, and emotionally satisfactory attachment of the patient to the prosthesis. It is anticipated that patients who are willing to undergo placement of implants would have a greater commitment to continued use of their prostheses. Clearly, there is a greater affinity between a patient and his or her prosthesis when the attachment is an intimate one. The use of implants, then, could reverse functional deficiencies and raise the quality of the patient's post-disease life.

Denture Design↗
PubMed1992

Impression making, sculpting, and coloring of orbital prostheses.

The replacement of any anatomic structure by artificial means remains a challenge. This is particularly true in the facial area. The replacement must be one which blends with the adjacent tissues as well as replaces the missing structures. Careful planning and meticulous attention to detail in fabrication of a prosthesis can enable the maxillofacial prosthodontist to make a major contribution in the rehabilitation of the patient with an orbital defect.

Eye, Artificial↗
PubMed1992

The Integral Implant System: prosthetic considerations.

Patients who are totally edentulous and who have been doomed to discomfort, pain, and dysfunction because of the inability to use complete dentures have been rehabilitated using various implant systems. Implants should only be considered after exhaustive medical history taking and diagnostic wax-ups. A variety of prosthetic techniques can be employed to restore various forms of edentulism. The Integral Implant System has proven to be a highly successful foundation to restore the patient to optimum function.

Dental Implantation, Endosseous↗
PubMed1989

Provisional restorations in maxillofacial prosthetics.

A variety of provisional prostheses for the maxillofacial prosthetic patient have been described. Each patient is different, and the prosthesis chosen will vary with the severity and type of defect acquired by that patient. Psychological, functional, and physiologic factors are prime in the immediate treatment of such patients.

Adult↗
PubMed1989

Integral implant-prosthodontic considerations.

Components of the Integral implant system, prosthodontic methods, and uses for the implant system have been described. The system is most effective in the restoration of edentulous areas of the maxillary and mandibular arches.

Dental Abutments↗
PubMed1986

Hydroxylapatite alveolar ridge reconstruction: clinical experiences, complications, and technical modifications.

Results of the reconstruction of 228 deficient alveolar ridges (208 patients) using hydroxylapatite with or without autogenous cancellous bone over a six-year period are reported. Complications included erosion, mental nerve neuropathy, migration and displacement of particles, overfill, and loose material. Modified techniques are presented that minimize the occurrence of these complications in Class III and IV ridge-deficient patients.

Adult↗
PubMed1986

Assessment of dental students' attitudes toward cancer using a paired comparison technique.

The purpose of this paper is to present a description of the development of an instrument to measure attitudes towards cancer. The instrument used a paired comparison technique to assess dental students' attitude toward patients with cancer in relation to other diseases of patients they would encounter in practice. Nine diseases including cancer were paired in 36 combinations. A shift in the ranking of cancer when compared with other serious diseases would indicate a change in attitude. The attitude instrument was administered to 67 students at the beginning and end of a junior oncology course. Analysis of the paired comparison resulted in rankings for the diseases from least to most preferred. The ranking for cancer moved from second to fourth indicating a positive attitude change. The importance of the students' attitude toward encountering patients with cancer and implications for this technique in attitude measurement are discussed.

Attitude of Health Personnel↗
PubMed1986

Prosthetic considerations in reconstructive implantology.

Diagnosis and treatment planning are essential prior to the placement of any dental implant. An overview of prosthodontic considerations in the restoration of such implants is presented in this article. Concepts for both the edentulous and partially edentulous mouth are discussed.

Bite Force↗