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At least 55 records · Page 3Linked to original sources
PubMed2002

Histometric study of socket healing after tooth extraction in rats treated with diclofenac.

The purpose of the present study was to investigate if diclofenac administration interferes with the time course of alveolar wound healing in rats. Forty-two Wistar rats were used, 21 rats received 10 mg/kg/day of diclofenac one day before and 4 days after extraction of the right maxillary incisors and 21 rats received saline. The animals were sacrificed 7, 14 and 21 days after tooth extraction. Progressive new bone formation and a decrease in the volume fraction of blood clot and connective tissue from 1 to 3 weeks after tooth extraction was quantified using the histometric point-counting method. Diclofenac treatment caused a significant delay in new bone formation in association with an impairment of blood clot remission/organization.

Alveolar Process↗
PubMed1993

Reactivated herpes simplex virus infection as a possible cause of dry socket after tooth extraction.

This study was designed to evaluate a possible association between reactivated herpes simplex virus type 1 (HSV-1) infection after lower third molar extraction and development of dry socket (DS). The HSV-1 antibody response was analyzed before and after tooth removal by enzyme-linked immunosorbent assay and immunoblotting in 208 patients. History of previous possible oral herpes reactivation was evaluated by a questionnaire that was based on self-rated frequency of oral cold sores. Tobacco users were identified. The anatomic proximity of the root apex to the mandibular nerve canal was classified radiographically before extraction. Fifteen patients (7%) developed DS after tooth extraction. Eleven of the 15 DS patients (73%) were HSV seropositive as compared with 7 of 15 (47%) in the matched control group. Seven of the 11 seropositive DS patients have shown HSV-1 reactivation by an increase of specific polypeptides, predominantly gB, gC, gD and ICP 4 and 6, in the immunoblot test. No change in HSV-1 reactivity was observed in control sera. DS patients reported a high frequency of oral cold sores (64%) compared with the controls (33%). Tobacco use was not found to influence the frequency of cold sores or the development of DS. A close radiographic proximity between the mandibular canal and root apex was more common (P < .05) in DS patients. The results indicate that extraction of a mandibular third molar could be a possible cause of reactivation and recurrence of an HSV-1 infection.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1978

Dental implant fixation by electrically mediated process. II. Tissue ingrowth.

The effect of electrical stimulation on the interfacial strength of the porous polymethylmethacrylate implant/oral tissue union and the amount of tissue growth was investigated in the fourth premolars of dogs. The study indicates the interfacial strength peaks at about three weeks and decreases thereafter for both control and the stimulated specimens. The stimulated side showed consistently higher strength than its paired control. There was a positive relationship between implant period and amount of tissue in the pores although the latter was not correlated with the interfacial strength. Microradiographs showed a different pattern of new bone formation on the stimulated side when compared to the control. On both sides, bone formation occurred upward from the bottom of the tooth socket while on the stimulated side, new bone also developed from the sides of the tooth socket which was minimal in the controls. It is proposed that the direction of oral tissue formation is responsible for the different results obtained in this study compared with a similar study on long bones.

Animals↗
PubMed1986

Investigation of dressings designed for treatment of alveolitis sicca dolorosa ("dry socket"). Part 3: Influence of mannitol and sorbitol on properties of tablets and dressings comprising acetylsalicylic acid, mefenamic acid and aseptin P.

In the dressings for dry tooth sockets, mannitol and sorbitol as solid hydrophilizers have been applied. Increase of concentrations of these hydrophilizers in the tablets results in dressings with increased swelling ability and pharmaceutical availability but decreased viscosity and resistance to washing out. These properties of the dressings are also influenced by medicinal substances present. The dressing fills the tooth socket within several min, removes pain and remain there for 24-48 h.

Anti-Infective Agents↗
PubMed1998

[A method of measuring eruptive movement of the rat incisor using a non-contacting displacement detector].

The axial movements of rat incisors were recorded continuously for over 20 hr. The rats were anesthetized with halothane delivered by intratracheal intubation using an artificial respirator. A hemostatic clamp was used to immobilize the jaw. The displacement detector that detects changes in the electric eddy current exhibited high resolution, good linearity and low drift. The average eruption rates of the rat incisor were estimated to be 406 and 516 microns/ 24 hr at 34 and 37 degrees C of the rectal temperature, respectively. The values were within the normal range. We also measured the force needed to restrain eruptive movement of the rat incisor using the same apparatus combined with a load cell. The maximum pushing force was estimated to be 9 mN or 29 mmHg (converted value) on average. Then the effects of adrenaline on axial movement of the incisor and arterial blood pressure were examined. Adrenaline caused a rapid extrusive tooth movement with a nearly simultaneous increase in the blood pressure, followed by a marked intrusive tooth movement and a decrease in blood pressure. These results support the view that the systemic arterial blood pressure and vasculature in the tooth socket play important roles to determine the position of teeth. We assume that our method would be useful to clarify the precise relationship between tooth displacement and vascular change in the tooth socket.

Alveolar Process↗
PubMed1988

Investigation of dressings designed for treatment of alveolitis sicca dolorosa. Part 4: Analysis of the mechanism of liberation of drugs from dressings in vivo.

Analysis of liberation of medical substances from dressing for treatment of dry tooth-socket proved that this process proceeds simultaneously to two receiving compartments. Liberation to saliva proceeds as in vitro conditions, whereas liberation to tissue of the tooth-socket is limited by the absorption rate. Based on measurements carried out in vitro one can predict the period of effectiveness of the dressings in vivo. It is evident that results of measurements in vitro can be correlated with those in vivo.

Bandages↗
PubMed1983

A new look at the mineralized and unmineralized components of intraosseous fibers of the interdental bone of the mouse.

The degree of mineralization of deeply embedded intraosseous fibers has been the subject of speculation. However, there were few available descriptive morphological studies addressing this question. The present study demonstrated that morphological differences were evident between intraosseous fibers of different levels of the interdental septum. It also revealed that the degree of mineralization of intraosseous fibers was often different at the wall of the tooth socket in comparison to that at deeper levels of interdental bone. Except in the superior crestal third, intraosseous fibers became less mineralized as they passed from the wall of the tooth socket to the midline of the interdental septum. They were surrounded by sheaths throughout their distribution. It was concluded that there might be significant differences in the morphology of intraosseous fibers of the mouse in comparison to the morphology of intraosseous fibers of the dog, which have previously been described in detail.

Alveolar Process↗
PubMed1992

The efficacy of locally applied aspirin and acetaminophen in postoperative pain after third molar surgery.

This study evaluated the efficacy of and investigated the site of action of aspirin and acetaminophen placed directly into tooth sockets after bilateral third molar surgery under local anaesthesia. On completion of surgery, 12 patients received in random, blind order either a suspension of aspirin in a methyl cellulose gel (100 mg/ml) in their tooth sockets and an oral placebo or the methyl cellulose alone in their sockets and an oral dose of aspirin (50 mg). The remaining 12 patients were treated in the same fashion with use acetaminophen. Patients were asked to record their pain, at intervals, over an 8-hour period on a 10 cm visual analog scale. Significantly less pain (p less than 0.05) was recorded throughout the 8-hour investigation period after both locally placed drugs than after placebo. There was no adverse effect on healing. The peripheral activity of aspirin is confirmed, and our findings suggest that acetaminophen has a significant peripheral effect in mediating its analgesic properties in postoperative pain after third molar surgery.

Acetaminophen↗
PubMed1986

Investigation of dressings developed for the treatment of alveolitis sicca dolorosa. Part 2: Influence of glycerol and PEG 200 on the properties of tablets and dressings comprising mefenamic acid and Nipagin P.

Some hydrogel dressings have been investigated to determine their utility for the treatment of painful dry tooth-socket (Alveolitis sicca dolorosa). As drugs mefenamic acid and Nipagin P have been applied. Hydrophilized methylcellulose, 5-15% glycerol or 5-20% PEG 200 were the filling and gel building material. It has been found, that the properties of the dressings depend on the content of the hydrophilizers. The half liberation time of the drugs under study ranges from 0.5 to 11 h, the swelling degree amounts to 366-400%, the washing out time runs to 80-140 min and the period of activity of the dressings inside the tooth-socket amounts to 24-48 h. The dressings show thixotropic properties and a high flow limit.

Bandages↗
PubMed1983

Circumstances favoring jaw tumors in Burkitt's lymphoma.

In Burkitt's lymphoma, dental structures may provide the route for Epstein-Barr virus (EBV) in saliva to penetrate the jaws, thereby promoting tumor formation. In children, EBV could enter tooth sockets exposed following deciduous tooth loss and thereby contact jaw marrow lymphocytes stimulating neoplastic transformation. Marrow contact by EBV probably also occurs through carious teeth. Jaw tumors are rare in adults because their jaw marrow is no longer hematopoietic and so lacks the lymphoid substrate for the virus. In adults, jaw marrow lymphocytosis, as accompanies infectious mononucleosis and perhaps malaria, or which could develop around the roots of carious teeth having chronic periapical infection, could provide the substrate for EBV. EBV could then contact the jaw marrow lymphocytes when teeth are extracted and so favor jaw tumor development. Therefore, prevention of dental caries might reduce jaw tumor prevalence in Burkitt's lymphoma except among children ages 6-13 whose jaw marrow would unavoidably become infected by salivary EBV when the latter is present at the time of deciduous tooth loss.

Burkitt Lymphoma↗