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Biomedical subjects

P Bercy

Publications and source records attributed to P Bercy.

At least 19 recordsLinked to original sources
PubMed1995

[Decision to extract for periodontal reasons].

The decisions to extract that are discussed here mainly relate to severe periodontal bone losses and plain interradicular attacks. Extractions for periodontal reasons appear at several treatment stages: immediate extraction in terminal stages, e.g. for teeth without any strategic importance, or deferred extraction if one chooses to wait for treatment response. The elements of the decision are various: function and strategic importance of the tooth, extension of the lesion, level of the interradicular attack, any endoperiodontal lesions, fractures and luxations, radicular proximity, implication of wisdom teeth, evolution after treatment. All these factors are discussed.

Alveolar Bone Loss↗
PubMed1994

[Microbial diffusion by aerosol during ultrasonic scaling: descriptive study].

The aim of this study was to evaluate the bacterial spreading by using ultrasonic scaler and air-polisher. During ultrasonic scaling, bacterial spray is important near patient's mouth (30 cm), principally without good aspiration devices. In this case, clear spreading is observed at 2 m from the patient. Air-polishing compared to ultrasonic scaling produces larger microorganisms pollution.

Aerosols↗
PubMed1993

Subgingival minocycline hydrochloride ointment in moderate to severe chronic adult periodontitis: a randomized, double-blind, vehicle-controlled, multicenter study.

The safety and efficacy of subgingivally-applied 2% minocycline ointment was evaluated in a randomized, double-blind study of 103 adults with moderate to severe periodontitis. Two groups were compared; one received the test minocycline ointment and the other a vehicle control. Both groups had scaling and root planing at baseline, after which the test or control ointments were applied with an applicator into the periodontal pockets at baseline, and at 2, 4, and 6 weeks. Assessment of clinical response was made by measuring probing depth and probing attachment level and gingival bleeding. These measurements were made at baseline prior to scaling and root planing, and at weeks 4 and 12. Microbiological assessment of the subgingival flora was carried out with DNA probes at baseline, and at weeks 2, 4, 6, and 12 to identify and quantify Porphyromonas gingivalis, Prevotella intermedia, and Actinobacillus actinomycetemcomitans. Subgingival minocycline ointment resulted in statistically significantly greater reduction of P. gingivalis at weeks 2, 4, 6, and 12; P. intermedia at weeks 2, 4, 6, and 12; and A. actinomycetemcomitans at weeks 6 and 12. Probing depth reductions were seen for both groups at weeks 4 and 12; however, this reduction was statistically significantly greater in subjects treated with minocycline ointment. Reduction in gingival index and probing attachment gain were seen in both groups, however, the differences between the groups were not statistically significant.(ABSTRACT TRUNCATED AT 250 WORDS)

Administration, Topical↗
PubMed1991

The effectiveness of a preventive regimen on the periodontal health of patients undergoing chemotherapy for leukemia and lymphoma.

In patients with leukemia or lymphoma, the role of preventive oral hygiene in reducing infectious periodontal complications during aggressive chemotherapy is well documented. However, the effectiveness of these measures in preventing further dental or periodontal degradation remains to be demonstrated. 34 hospitalized patients with malignant heamatological diseases were observed. During chemotherapy, tooth brushing was replaced by 3 daily mouth-rinses with 0.2% chlorhexidine digluconate. The periodontal status of these patients, appears unchanged after 12 months. This suggests that the prophylactic measures do prevent a measurable periodontal degradation, even in the presence of pre-existing periodontal disease.

Acyclovir↗
PubMed1991

[A case of oral rehabilitation].

The success of the treatment of patients suffering from severe chronic periodontitis urges a tight complicity between dentist and patient. This article underlines the importance and the sequence of the treatment: medical anamnesis, initial periodontal examination, motivation of the patient for better oral hygiene, initial non-surgical treatment, follow-up of the healing, pre-prosthetic surgery, provisory and definitive prosthetic treatment, maintenance. It shows the results, 3 years after the treatment of a female patient, suffering from periodontitis in a terminal stage.

Dentist-Patient Relations↗
PubMed1990

[Criteria for choice of an alloy for dental amalgams].

Dental amalgam is still the safest and the most utilized posterior restorative material. The amalgam weakness is the marginal leakage of the filling. This defect is the main source of failure. Creep and corrosion are the most important factors in the marginal destruction mechanism. It's suitable to determine material properties before oral use. Electrochemical methods i.e. corrosion potentials and currents are mainly utilized. In vivo techniques have been developed. Those techniques give us interesting informations on amalgam buccal behaviour in course of time. Amalgam choice is very important: the best one is a High Copper alloy with high corrosion resistance and low creep.

Copper↗
PubMed1990

[Comparative effectiveness of the Interplak electric rotary toothbrush].

The purpose of this study was to compare the Interplak rotary electric toothbrush with conventional toothbrushing for its effectiveness in controlling supragingival plaque and gingival inflammation. Twenty subjects, received the same hygiene instructions, were selected and divided into two equal groups. One group used conventional toothbrushing (Control group) and the other one used only the rotary electric toothbrush (Test group) for a 4 weeks study period. The plaque index (PLI), the plaque index limited on proximal sides (PPLI), the bleeding index (PBI) and the periodontal destruction index (PDI) were recorded at base line and after 4 weeks. Test group had significantly improved scores for PLI, PPLI and PBI. No differences were found in control group. These results indicate that the rotary electric toothbrush (Interplak is more effective for plaque removal and control of gingival inflammation that classic manual brushing.

Dental Plaque↗
PubMed1989

[Manual dexterity and acquisition of correct dental hygiene].

The aim of this study was to evaluate the relationship of normal dexterity and the ability to obtain correct dental hygiene. Manual dexterity level was determined by means of psychotechnical tests on 35 students. Plaque index was noted before oral hygiene instructions including tooth-brushing and flossing techniques according to BASS. The same index was noted 15 days after instructions. Statistical analysis of results showed no significant relationship between manual dexterity and plaque control efficiency.

Dental Devices, Home Care↗
PubMed1989

[Dental prophylaxis by the patient].

Conscientious self-application of oral hygiene procedures by the patient is related to the need to obtain and to keep plaque-free teeth. This need is aroused by pleasant aspects. One appointment is reserved to demonstrated proper plaque control techniques. Instruction on the correct brushing method is explained with the aid of demonstration models and afterwards in the mouth with the use of a hand mirror. It is necessary to confirm the effectiveness of the instructed method in plaque removal with each patient. We describe a modified BASS toothbrushing technique. Patients without periodontitis, for example in case of chronic gingivitis, are instructed for flossing. Patients with periodontitis receive instruction for use of interdental cleaning (floss and/or interproximal brushes). Patient motivation is repeated during treatment period, control routine visit and maintenance phase. At each visit, technique efficiency is controlled visually or by bleeding test and plaque control is corrected.

Dental Plaque↗
PubMed1989

HLA: a review of actual knowledge and perspectives in periodontology.

The Major Histocompatibility Complex is a relatively poorly explored research area among the various immunological aspects of periodontal diseases. After a recall of general concepts, the authors first describe the general HLA-pathology association and then, the reported HLA-periodontal disease associations. HLA theoretical potential interests are multiple. Typing results show, on one hand, no clear correlation with juvenile periodontitis (diminution of A 2, augmentation of A 9, A 28, Bw 15 and Bw 35) but on the other hand, a more constant correlation between HLA A 9 and rapidly progressive periodontitis. Besides, three resistance factors have been reported: A 10, B 5 and A 28.

Aggressive Periodontitis↗
PubMed1989

[Periodontal considerations related to extractions].

During any tooth extraction, the dentist has to think about healing problems in order to maintain as much bone as possible afterwards. Careful and well done extractions using classical techniques allow maximum bone preservation in normal cases. At minima alveolectomy techniques are a guarantee against tremendous bone loss. After healing and before prosthetic rehabilitation, crests must be checked and, if necessary, corrected by one of the several available techniques.

Alveolar Ridge Augmentation↗
PubMed1989

[The therapeutic effects of non-surgical technics applied in the treatment of periodontitis].

The aim of the present investigation was to study the non-surgical periodontal therapy efficiency. 126 patients were selected for this study. 20,052 sites were observed during 2 years. Patients were instructed in oral hygiene before treatment and, if necessary, during the study. All the sites were treated by scaling and root planing. The treatment was followed by a three months maintenance. The pockets were classified in three depth groups (less than 3, greater than 3 less than 7, greater than = 7 mm). At base line, male patients showed a greater deep pockets number. Probing pockets measurements were recorded 3, 12 and 24 months after treatment. The results showed, after three months, an important reduction of the pockets number (greater than 3 less than 7 and greater than = 7 mm). A smaller reduction was also observed after 12 and 24 months. During the last 21 months of this study, a therapeutic effect of the maintenance appeared more clearly when a correlation was made with the initial pocket number. The healing was not influenced by the initial pocket depth. Only incisors and canines deepest pockets showed a better healing. In the same way, molars and premolars proximal sides showed a better answer. This last observation is, maybe, the consequence of the frequent papillectomy performed around the posterior teeth. The differences between female and male patients or between the age groups were not significative. Nevertheless, the therapeutic effect of the maintenance seemed to be more effective with younger patients.

Adult↗
PubMed1989

[Infra-osseous pockets and filling technics].

It is showed that severe periodontal pockets can be treated with success by non-surgical techniques. Nevertheless, numerous reports have appeared in the periodontal literature regarding the use of allografts, xenografts and alloplastic implants. The most investigated Calcium Phosphate biomaterials are composed of either Hydroxyapatite or Tricalcium Phosphate. In a number of studies on the regenerative potential of the periodontal tissues following periodontal grafting surgery it has been shown that pocket depth decreased but no indication of new periodontal attachment or cementogenesis adjacent to the graft particles was demonstrated. The authors felt the material was a biocompatible "fill". Histologic observations were accomplished and regularly showed the presence of a long junctional epithelial adhesion.

Adult↗