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PubMed1997

Treatment of fibrinolytic alveolitis with rifamycin B diethylamide associated with gelfoam: a histological study.

The most common complication in the healing of extraction wounds is fibrinolytic alveolitis, which may also be termed "dry socket". Reduction in the incidence of this condition after the application of topical antibiotics and the use of systemic antibiotics has been reported. A histological study of disturbed alveolar socket healing in rats was carried out to analyze the influence of application of rifamycin B diethylamide (Rifocin M) associated or not with Gelfoam. Sixty-four male rats (Rattus norvegicus albinus, Wistar), weighing 120-150 g, were divided into 4 groups of 16 animals each. In the second group of rats which received implants of Gelfoam, there was an intense resorption of bone walls in the initial stage. The rats that received implants of Gelfoam saturated with Rifocin M (fourth group) showed better results than the second group. The third group (only irrigation with rifamycin) showed better bone formation in the alveolar socket compared to the first, second and fourth groups. Thus, these results showed that rifamycin irrigation is useful in the control of alveolar infections.

Administration, Topical↗
PubMed2006

Histochemical and immunocytochemical study of hard tissue formation in dental pulp during the healing process in rat molars after tooth replantation.

Dental pulp is assumed to possess the capacity to elaborate both bone and dentin matrix under the pathological conditions following tooth injury. This study was undertaken to clarify the mechanism inducing bone formation in the dental pulp by investigating the pulpal healing process, after tooth replantation, by micro-computed tomography (mu-CT), immunocytochemistry for heat-shock protein (HSP)-25 and cathepsin K (CK), and histochemistry for both alkaline phosphatase (ALP) and tartrate-resistant acid phosphatase (TRAP). Under deep anesthesia, the upper right first molar of 4-week-old Wistar rats was extracted and immediately repositioned in the original socket. In control teeth at this age, the periphery of the coronal dental pulp showed intense ALP-positive and HSP-25-positive reactions, whereas there were no TRAP-positive or CK-positive cells. Tooth replantation weakened or terminated ALP-positive and HSP-25-positive reactions in the pulp tissue at the initial stages. At 3-7 days after operation, the ALP-positive region recovered from the root apex to the coronal pulp followed by HSP-25-positive reactions in successful cases showing tertiary dentin formation. In other cases, TRAP-positive and CK-positive cells appeared in the pulp tissue of the replanted tooth at postoperative days 5-10 and remained associated with the bone tissue after 12-60 days. Immunoelectron microscopy clearly demonstrated that CK-positive osteoclast-lineage cells made contact with mesenchymal cells with prominent nucleoli and well-developed cell organelles. These data suggest that the appearance of TRAP-positive and CK-positive cells is involved in the induction of bone tissue formation in dental pulp.

Acid Phosphatase↗
PubMed1993

Complications of dental surgery in persons with HIV disease.

Post tooth extraction infective complications have occasionally been described in HIV-infected persons. However, there is little objective data as to the frequency of this and the need for antibiotic prophylaxis. Similarly the frequency of postextraction bleeding in patients infected with HIV, who may have thrombocytopenia, is unknown. In the present study the frequency of postextraction complications has been investigated in a group of 38 persons at stages 2 to 4 of HIV infection and 26 matched subjects from patients groups commonly at risk of HIV infection but not seropositive. During 40 clinical procedures in HIV-infected patients, 100 (range 1 to 23, median 1) teeth were extracted. Three episodes of delayed postextraction healing were recorded. During 30 procedures in the non-HIV-infected persons, 68 (range 1 to 5, median, 2) teeth were extracted, and two episodes of delayed postextraction healing were recorded. These differences were not significant. Only one HIV-infected patient had an episode of severe postextraction bleeding: this was a hemophiliac who bled despite receiving factor VIII prophylaxis. The bleeding occurred 7 days after the extraction and ceased with tranexamic acid and additional factor VIII. No control subject had severe postextraction hemorrhage. It is concluded that postextraction complications are uncommon in HIV-infected patients and that routine antibiotic prophylaxis is not indicated.

Adult↗
PubMed1990

The development of the periodontal ligament with special reference to collagen fibre ontogeny.

The development of the periodontal ligament was investigated from serial sections of the mandibles of ferrets ranging in age from 42 days to 66 days post partum. Both succedaneous and non-succedaneous teeth were studied and similarities were seen in both types of tooth. No significant amounts of alveolar bone were observed being deposited beneath the erupting root apices and periodontal collagen fibres were seen attached to the walls of the sockets just prior to emergence of the crown into the oral cavity. Compared with the condition a few days after eruption, the collagen fibres on, and just prior to, emergence were thinner, had a more limited area of attachment, and were more randomly orientated. The results indicate that alveolar bone deposition and collagen traction do not generate the eruptive force and that there are species differences in these structural features during the eruptive process.

Aging↗
PubMed1985

Tooth extraction in two patients who had a congenital deficiency of factor XIII.

Two cases of the extraction of deciduous teeth in unrelated patients who had congenital Factor XIII deficiency are reported. The modes of inheritance of the deficiency are discussed, and methods of screening, diagnosis, and treatment are suggested. A combination of a local hemostatic treatment and transfusion of Factor XIII concentrate resulted in the sockets healing without further postoperative bleeding in both cases.

Child↗
PubMed1979

Metronidazole in the prevention of 'dry socket'.

Prophylactic metronidazole was found to be an effective means of preventing 'dry socket' after routine dental extractions. The oral anaerobic bacterial may be implicated therefore in the development of the disorder. It has been confirmed in this study that 'dry socket' occurs following three per cent of routine dental extractions and almost exclusively in the mandible. The causes of the condition are probably numerous and may even vary from patient to patient, but the control of infection by anerobic organisms may be important in its prevention or early resolution. The prophylactic administration of metronidazole (Flagyl) has been shown to be a simple and effective method of prevention which would suggest the implication of anaerobic organisms in 'dry socket'. The drug appears to be free from side effects when a dosage of 200 mgs eight hourly for three days is given.

Adult↗
PubMed1977

Effect of lavage on the incidence of localized osteitis in mandibular third molar extraction sites.

Four hundred twenty-two mandibular third molars were extracted in 211 patients. After extraction, one half of the surgical sites were subjected to a 175 ml. lavage with normal saline solution, and the other half received a lavage of less than 25 ml. of normal saline solution. Comparisons revealed the following: 1. The overall incidence of localized osteitis was 8.3 per cent (thirty-five of 422 sites). 2. Localized osteitis occurred at twelve of 211 (5.7 per cent) sites which were subjected to the higher-volume lavage. 3. Localized osteitis occurred at twenty-three of 211 (10.9 per cent) sites which were subjected to minimal lavage. 4. The incidence of localized osteitis was determined in the various age groups as follows: ages 15 to 20, 5.0 per cent; ages 21 to 35, 10.4 per cent; ages 26 to 30, 14.7 per cent. 5. Localized osteitis occurred at eight of 175 (4.5 per cent) partial-impaction sites, whereas it occurred at twenty-seven of 246 (11 per cent) complete-impaction sites. 6. The incidence of localized osteitis at extraction sites in female patients taking oral contraceptives was 19.4 per cent (seven of thirty-six sites). 7. Postoperative infection occurred at seven of 422 extraction sites (1.4 per cent); six of these occurred at sites which were subjected to minimal lavage. These results indicate that the use of a 175 ml. lavage with normal saline solution after extraction of mandibular third molars will significantly reduce the incidence of localized osteitis to approximately one half of that observed when only a minimal-volume lavage is used. The results also suggest that age, type of impaction, and whether the patient is taking oral contraceptives are all important factors to be considered in the incidence of localized osteitis.

Adolescent↗
PubMed1992

Evaluation of intra-alveolar chlorhexidine dressings after removal of impacted mandibular third molars.

Chlorhexidine gluconate (CHX) has been investigated for its possible benefit in the prevention of alveolar osteitis complicating third molar removal. In a double-blind, placebo-controlled clinical study, 70 randomly selected healthy patients were subjected to uncomplicated mandibular third molar removal followed by CHX-gelatin sponge and saline solution-gelatin sponge intra-alveolar dressings. Each patient was followed for 6 days for postoperative discomfort and complications, and scored accordingly. The results demonstrated that patients receiving 0.2% CHX intra-alveolar dressings exhibited a significant reduction in postoperative discomfort and complications when compared with saline solution-treated control sites (p less than 0.005). Further, this phenomenon was not found to be related to patient factors including age, sex, and race, nor did any correlation exist between treated or control sites, and surgical factors including performing surgeon, surgeon's dominant hand, time of surgery, surgical site, and difficulty of the removal. These findings warrant further studies concerning the apparent clinical benefit of postextraction intra-alveolar CHX dressings for the reduction of postoperative alveolar osteitis.

Adult↗