RESUMO
Aims: The aim of this study is to evaluate and compare the sealing ability of a new resin cement which was undergoing trial with other three luting cements. Settings and Design: In vitro study. Subjects and Methods: Forty extracted intact human premolars were selected and standardized class 5 preparations for inlays were done at cementoenamel junction of buccal surfaces and direct composite inlay was fabricated. The samples were randomly grouped into 4: Group I luted with Rely X ARC resin cement, Group II with DCRC-10, a new indigenously developed resin cement, Group III with FujiCEM, and Group IV with zinc phosphate. After 24 h storage, samples were thermocycled and immersed in basic fuchsine dye. The longitudinal sections were assessed under a stereomicroscope for microleakage using graded criteria. Statistical Analysis Used: To analyze leakage scores among four groups and between enamel and dentin/cementum margins, Kruskal-Wallis nonparametric test and the Mann-Whitney test at P < 0.05 were used. Results: The dye penetration at cementum/dentin margins showed a statistically significant difference among four groups (P < 0.001). Adhesive luting cements produced lesser leakage scores at both margins than those cemented with zinc phosphate. Conclusions: The indigenously developed resin cement (DCRC-10, Group II) is comparable to that of Group I (RelyX ARC) in terms of its luting efficiency.
RESUMO
Amputation of all or part of a limb may be due to systemic disease, vascular disease, infection, local injury or trauma. Partially amputated lower limbs present a variety of unique clinical and prosthetic challenges, because of distinctly different amputation levels of the lower limb. A female patient with history of Partial Foot Amputation (PFA) surgery at metatarsophalangeal joint level, due to crush injury reported for prosthetic rehabilitation. This case was successfully rehabilitated using room temperature vulcanizing (RTV) medical grade silicone for fabrication of foot prosthesis. Though limited in its function, it amply proves that the clinical and laboratory techniques used in fabrication of maxillofacial prosthesis can be effectively adapted for the fabrication of body prosthesis like toes and feet to enhance the quality of life of the patients. The patient was reviewed every year for three years.
RESUMO
Auricular prostheses for defects of external ear are retained either by mechanical means or implants. All implant retained prostheses are retained by various means such as bar and clip, magnetic attachments or a combination of bar, clip and magnets. The commonest problem encountered with the bar and clip system is loosening of the clip after 3-4 months. When magnets are used as retaining component they tend to corrode over a period of time. So various alternative retention methods which possess good retentive qualities, ease of reparability and patient friendly were tried. In the present case a newly modified Hader bar design which can act as an additional retentive feature apart from the clip is employed to increase retention. The major advantages in the modified Hader bar system were that only two implants were employed, the additional loops in the Hader bar prevented micro movements and the retentive acrylic locks were easy to repair if broken. The modified Hader bar has anti-rotational slots which prevents the sliding or rotation of the prosthesis which gave new confidence to the patient who was otherwise worried of inadvertent displacement of the ear prosthesis while playing.
