ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1985.tb02292.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Abstract.Incisors, cuspids and premolars in 33 patients with advanced chronic periodontitis were treated by plaque control and 1 single episode of supra‐ and subgingival debridement. The results were monitored by probing attachment level measurements for 6 sites of each tooth every 3rd month during a period of 24 months, A total of 1368 sites were observed. From these were selected 280 “non‐responding” sites showing 1.0 mm or more loss of probing attachment at 24 months compared to baseline. Scatter diagrams of the sequence of 9 probing attachment recordings obtained during the 24‐month study were produced for each of these 280 sites. Study of these scatter diagrams resulted in identification of 7 different patterns of probing attachment change over time. A linear pattern of gradual Joss of probing attachment throughout the 24‐month observation period was found for 73% of the non‐responding sites. Of the less frequently seen patterns, 3 approximated a linear course and 3 were non‐linear. Linear analysis of regression as a statistical method to determine attachment loss for individual sites seems to be suitable for sites with linear patterns and for sites approximating a linear pattern. The insensitivity of regression analysis in non‐linear patterns may be acceptable if a cautious anal

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1985.tb02293.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Abstract.The aim of the present clinical trial was to evaluate the effect of different modes of periodontal therapy on patients with moderately advanced periodontal disease and to express the findings in terms of probing pocket depth and attachment level alterations at periodontal sites with different initial probing depths.The material consisted of 16 patients, 35–65 years of age. Following aBaseline examinationincluding assessments of oral hygiene status, gingival conditions, probing pocket depths and probing attachment levels, the patients were subjected to periodontal treatment. A “split‐mouth” design approach of therapy was used and the jaw quadrants were randomly selected for the following different treatment procedures: (1) scaling and root planing, (2) scaling and root planing in con junction with a gingivectomy procedure, (3) scaling and root planing m conjunction with an apically repositioned flap procedure without bone recontouring. (4) scaling and root planing in conjunction with an apically repositioned flap procedure including bone recontouring, (5) scaling and root planing in conjunction with a modified Widman flap procedure without bone recontouring and (6) scaling and root planing in conjunction with a modified Widman flap procedure including bone recontouring. The patients were following active treatment enrolled in a supervised maintenance care program including “professional tooth cleaning” once every 2 weeks during a 6‐month period of healing, after which a final examination was performed.The investigation demonstrated that active therapy including meticulous subgingival debridement resulted in a low frequency of gingival sites which bled on probing, a high frequency of sites with shallow pockets (6 mm) pockets.With the use of regression analysis, the “critical probing depth” (CPD) value (i.e. the initial probing depth value below which loss of attachment occurred as a result of treatment and above which gain of probing attachment level resulted) was calculated far each of the 6 methods of treatment used‐ A comparison of the CPD‐values between the 6 treatment groups did not

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1985.tb02294.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Abstract.The aim of the present study was to examine the effect of citric acid treatment on periodontal healing around teeth which were extracted, root planed and then reimplanted. Maxillary incisors and mandibular incisors, premolars and molars of 5 monkeys were used. The teeth were divided into 3 experimental groups. In 1 group, the teeth were extracted and immediately reimplanted into their own sockets. In a 2nd group, the teeth were extracted, root planed to a level corresponding to 50–75% of the root length and then reimplanted. In the 3rd group, periodontal breakdown extending to 50‐75% of the root length was first induced by placing orthodontic elastic ligatures around the teeth. They were then extracted and root planed and transplanted into the sockets of the contralateral, periodontally healthy teeth which had just been extracted. Half the number of the teeth of groups 2 and 3 were treated with citric acid before reimplantation or transplantation. The animals were sacrificed after 6 months of healing. The jaws were removed and histological specimens prepared for microscopic examination.With the exception of a limited coronal regrowth of new cementum in the apical part of the planed portion of a few roots, connective tissue attachment failed to reform on most root surfaces deprived of their periodontal ligament tissue. Healing was most frequently characterized by root resorption and ankylosis. These were the most predominant features of healing both on root surfaces which had been deprived of the ligament tissue by mechanical means or during a course of experimentally‐induced periodontal disease, and occurred in citric acid as well as non‐citric acid treated roots. The findings imply that the result of healing following tooth reimplantation or transplantation is determined by the type of cells that repopulate the wound area adjacent to the denuded root

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1985.tb02295.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Abstract.The present report compares pre‐ and postoperative probing pocket depths and probing attachment levels in deep pockets treated non‐surgically as well as surgically using probing forces at 0.25 N.0.50 N and 0.75 N. The results demonstrated that the recorded mean pre‐and postoperative probing depths were deeper with increasing probing force. In deep preoperative pockets, the difference amounted to as much as 2.0 mm comparing measurements at 0,25 N and 0.75 N. The use of 0.25 N for evaluation of therapy showed less mean pocket reduction and probing attachment gain than the use of 0.50 Nor 0.75 N. Selection of a higher probing force before therapy (i.e. 0.75 N land a lower force after therapy (i.e. 0.25 N) resulted in increased values for pocket reduction and probing attachment gain compared to use of the same probing force for both pre‐ and postoperative recordings. The bindings emphasize the significance of using a known and standardized probing force for evaluation of results following periodontal

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1985.tb02296.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Abstract.The purpose of the study was to examine the association between alignment conditions of anterior teeth and dental health in 15–year‐old adolescents. The study group consisted of 74 females and 70 males with 6 anterior teeth in both jaws. The following parameters were assessed: plaque index (PII), gingival index (GI), probing depth (PD), space index (SpI), filled surfaces (FS), and the NONAS ‐ i.e., the number of non‐aligned proximal tooth surfaces in each jaw counted on model casts. Statistical examination of the data was performed usingx2tests of association and homogeneity and correlation coefficient analyses. In both sexes and both jaws, anterior tooth segments with none or few non‐aligned teeth had a more favourable periodontal state than segments with an increased number of non‐aligned teeth. Likewise, tooth segments with none or few non‐aligned teeth had a reduced frequency of proximal fillings compared to segments with an increased number of non‐aligned teeth. In males, the distribution of restorations in the anterior segment of the lower jaw was relatively homogeneous

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1985.tb02297.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Abstract.The present study was performed to find out whether implants placed around periodontally involved teeth during reconstructive surgery would support replaced flaps and prolong gingival coverage of the treated root surfaces facilitating new attachment.Through‐and‐through furcation defects were made in the mandibular second, third, and fourth premolars of 10 beagle dogs. Bone was surgically removed from the furcation and from the circumference of each tooth to a level 3 to 4 mm apical to the cementoenamel junction. Steel wires were passed through the furcations and ligated to enhance plaque formation. At 6 weeks, the wires were removed. At 12 weeks, during reconstructive surgery, 4 dogs received implants of autogenous intraoral cancellous bone, 2 of autogenous iliac cancellous bone and marrow, 2 of Proplast®, and 2 of Avitene®. The results demonstrated that none of 12 teeth implanted with Avitene® or Proplast® showed new attachment. Only 2 of 6 teeth implanted with autogenous iliac bone showed new attachment, combined with extensive root resorption and ankylosis. Of 12 teeth implanted with autogenous intraroral bone, 6 showed new attachment. Our findings suggest that flap support by intraoral cancellous bone implants may facilitate new attachment. A more predictable technique, however, needs to be de

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1985.tb02298.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Abstract.The present study was conducted on 18 individuals to determine if Keyes' method of oral hygiene would present an alternative to traditional periodontal therapy in terms of establishing a subgingival microflora compatible with periodontal health. Oral hygiene, gingival conditions and subgingival microbial proportions assessed by dark field microscopy were measured at baseline, then once every 2 weeks for the remainder of this 8‐week study. In addition, probing depths and bleeding on probing were evaluated. Group I (9 patients) was treated non‐surgically, while Group II (9 patients) had received surgical therapy within the last 4 years. Both groups received routine scaling and root planing (Sc/RP) on onearchat time 0. and both were instructed To use Keyes' method of oral hygiene on onesideof the mouth while the other side served as a control. This yielded a split‐plot experimental design which permitted examination of the effects of Keyes' method of oral hygiene. Sc/RP and surgery.The results revealed no statistically significant differences between Keyes' method of oral hygiene and conventional oral hygiene in patients treated with a single session of Sc/RP, When scaling was not employed, Keyes' method was more effective than conventional oral hygiene. Surgical status was found to be the most significant factor in reducing clinical indicator values and establishing control of the subgingival microflora.In summary, oral hygiene alone had only minimal effects on subgingival microbial proportions. The primary antimicrobial effect observed, as evidenced by shifts in subgingival morphotype proportions, was produced by the Sc/RP procedure. This effect was enhanced by improved access (surgical st

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1985.tb02299.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY