Microbiological evaluation of different overdenture abutments design

The mouth is the portal of entry of food this provides access to a wide array of microbes, the majority of which become part of the transient oral flora. Microbiological studies on samples taken from gingival pockets surrounds overdenture abutment teeth revealed different types of bacteria. The design of the overdenture prosthesis and supporting abutments affect the nature and quantity of bacterial found and that will be revealed in this study. This study was conducted to compare the microbiological changes occurring in gingival and periodontal tissue and gingival crevicular fluid as indicators of the condition of periodontium around abutments with different designs of abutment teeth of tooth supported mandibular overdenture. Subgingival bacteriological samples were taken from abutment's gingival crevice at the time of denture insertion and after three months to evaluate the effect of abutments design on the bacterial types as well as counts. The collected samples were cultured, identified and counted. A total of 20 male patients were divided into two equal groups according to abutment's length [Group I and II]. The patients' abutments were subdivided into two equal groups according to abutment's covering [A and B]. This study revealed an increase in anaerobic bacteria in both groups, with significant increase in Group I-A [patients rehabilitated with long abutments with copings] while all other groups have shown to significant difference before and after denture insertion. Insertion of overdenture accompanied with increase of anaerobic bacteria

prospective randomized study of tension-free herniorrhaphy [modified Shouldice repair] versus tension-free hernioplasty [Lichtenstein repair] in primary inguinal hernia

Objective: Ideal technique for effective inguinal hernia repair is still controversial

Patients and methods: The presented study was conducted on 80 male patients with uncomplicated unilateral primary inguinal hernia. The patients were randomly selected either for modified Shouldice repair [36 patients] or Liechtenstein repairs [44 patients]. Patients were followed postoperatively for 2 years

Results: The mean age of the patients was 34.4 years for Shouldice group and 32.710! Lichtenstein group. The mean operative time was 74 minutes for modified Shouldice repair and 56 minutes for Lichtenstein repair. No intra-operative complication! occurred in patients of both groups. Postoperatively, in the Shouldn't: group, 18 patients [50%] reported slight pain, 12 [33.3%] reported moderate pain and 6 [17.7%] reported severe pain, while in the Liechtenstein group, 11 patients [25%] reported no pain, 20 patients [45.6%] reported slight pain and 13 [29.4%] reported moderate pain. The patients a] Lichtenstein group required postoperative analgesia less than patients of Shouldice group. The mean hospital stay was 4 days for Shouldice group and 2 days for Lichtenstein group. The mean time of return to unrestricted physical activities was 16 days In Shouldice group and 12 days in the Lichtenstein group. Early postoperative complications were. inguinal seroma reported In one patient [2.8%] of the Shouldice group and in 3 patients [6.9%] of the Lichtenstein group and superficial wound infection In 2 patient! [5.6%] of Shouldice group and in one patient [2.3%] of Lichtenstein group. During the period of follow-up, pain at the surgical site was reported in 6 patients [16.7%] of Shouldice group and in 12 patients [27.3%] of Lichtenstein group, feeling of a foreign body in the groin was reported in 16 patients [36.4%] of Lichtenstein group. There was no statistically significant difference between pre-and postoperative spermogram and Doppler flow parameters for both groups

Conclusion: Both techniques are largely equivalent with advantage for the mesh repair because of easier performance, shorter operative time and rapid return to full physical activities