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PubMedDate not supplied

Severe bone loss caused by orthodontic rubber bands; management and nine-year follow-up: report of case.

This case reports the early diagnosis and treatment of an iatrogenic acute localized periodontitis arising from the incorrect use of orthodontic elastic rubber bands to close a maxillary midline diastema in an eight-year-old girl. The case illustrates the misdiagnosis and mismanagement of a transitional diastema in the "ugly duckling" stage of the mixed dentition. The nine-year follow-up shows that thorough periodontal and orthodontic management has allowed successful retention of both maxillary permanent central incisors, which had initially pathological grade 3 vertical mobility, little remaining alveolar bone, and a hopeless prognosis.

Acute Disease↗
PubMedDate not supplied

[Articular-telescopic bridge prosthesis on loose teeth].

A clinical case is described for removable articulartelescopic bridge prosthesis of a defect, restricted distally by loose teeth (II degree of pathological looseness) and 3/4 atrophy of the alveolar bone. Compromised prosthesis has been realized by restriction and equalizing the mobility of the bridge-carriers by an articular and telescopic connection. Bulagarian articular elements have been used (TCE) for a soft contact and stabilization and sinking conical telescopes.

Denture Design↗
PubMed1986

Association between signs of trauma from occlusion and periodontitis.

The purpose of this study was to evaluate the association between signs of trauma from occlusion, severity of periodontitis and radiographic record of bone support. The maxillary first molars of 300 individuals were independently evaluated by two examiners for signs of trauma from occlusion, pattern or occlusal contacts and severity of periodontitis. Each site was also evaluated radiographically by an independent third examiner. The results indicated that: teeth with either bidigital mobility, functional mobility, a widened periodontal ligament space or the presence of radiographically visible calculus had a deeper probing depth, more loss of clinical attachment and less radiographic osseous support than teeth without these findings, teeth with occlusal contacts in centric relation, working, nonworking or protrusive positions did not exhibit any greater severity of periodontitis than teeth without these contacts, teeth with both functional mobility and radiographically widened periodontal ligament space had deeper probing depth, more clinical attachment loss and less radiographic osseous support than teeth without these findings and given equal clinical attachment levels, teeth with evidence of functional mobility and a widened periodontal ligament space had less radiographic osseous support than teeth without these findings.

Adult↗
PubMed2006

[Mobility of B.C.T. dental implants inserted by one- and two-phase surgical method--an experimental study].

BACKGROUND/AIM: Achievement of the osseointegration of dental implants is of crucial importance for their long-term survival. One of the factors that influence the osseointegration is a surgical method of implantation. The outcome of osseointegration can be evaluated on the basis of implant mobility in bone. The aim of this study was to investigate and compare the mobility of B.C.T. dental titanium implants inserted to experimental animals using an one- and two-phase method. METHODS: The investigation was performed using a split-mouth design on nine dogs, male german shephards, average age of 3.5 years and average weight of 32 kg. Extractions of the third and fourth lower premolars were performed under intravenous (i.v.) anaesthesia with 5% ketamine chloride. Eight weeks after the extractions, the implants, diameter of 4.5 mm each, with four threads 13.7 mm long, were inserted. Eighteen implants were inserted one side of the jaw using a one-phase method, and another 18 implants were inserted contralaterally using a two-phase method. Three months after the implantation, the implant mobility was evaluated. Three measurements were performed with a Periotest device, and average values were calculated. The implant mobility was classified according to the Periotest scale in four groups of Periotest values (PTV) and compared. A total of 36 implants were inserted in 9 experimental dogs. The PTV ranged from -7.666 to + 50. RESULTS: According to the Periotest scale, 14 one-phase implants (78%) were classified into the 0 group of PTV, and 4 one-phase implants (22%) in the 3rd group. Thirteen two-phase implants (72%) were classified in the 0 group, and 5 implants in the 3rd group of Periotest scale. The difference in the average values of PTV between the two methods was 0.879 which was not statistically significant. CONCLUSION: This study showed that the method of implant insertion had no influence on the implant mobility, i.e. satisfactory osseointegration could be achieved by both methods. Further clinical parameters, as well as pathohistological and histomorphometric ones, have to be evaluated in order to assess better outcome of a particular method.

Animals↗
PubMed1978

[Clinical observations on the mobility of natural teeth in patients with partial dentures].

During the course of the study treatment consisted of individual motivation training and instruction in basic dental hygiene, two thorough cleansings, and careful daily plaque controls. The effect of periodontal treatment on the degree of inflammation, mobility, and periodontal pocket depth was determined at the end of a 20 day period of observation. Plaque controls appear to be more significant for the periodontium than stress exerted on the residual teeth.

Dental Plaque↗
PubMed1997

Single-stage surgery for implant placement: a retrospective study.

Single-stage implant placement surgery offers patients a number of advantages. These include reduced cost and time commitments and greater comfort, function, and convenience. This article reports on the results of using a single-stage technique with 58 patients fitted with 240 implants. No implant failures were detected in any patients prior to the final attachment of a Dolder bar. Among the 27 patients and the 125 implants followed for a longer period of time, 99.2% exhibited no signs of implant mobility or pain. Indicators of gingival health and oral hygiene ranged in quality from acceptable to ideal.

Adult↗
PubMed1999

Comparison of biting forces in different age and sex groups: a study of biting efficiency with mobile and non-mobile teeth.

This study aimed (1) to investigate the influences of sex, age and number of teeth on biting ability through a descriptive survey, and (2) to compare the biting ability between the subjects with and without mobile teeth in a case-control study. A total of 687 subjects cooperated in the descriptive survey. Each subject bit on a pressure detecting sheet with their maximum biting force. Three indices of biting ability: biting pressure (MPa), biting force (N) and occlusal contact area (mm2) were calculated from the impressed marks on the sheet using a high vision video processor system. These indices were correlated well with the number of teeth according to the multiple regression analysis. In the case-control study, matching procedures with sex, age and number of teeth were performed between the subjects with and without mobile teeth. No differences in the three indices were observed between the two well-balanced groups. The results showed that the number of teeth is most important to maintain biting ability, and that the presence of mobile teeth does not always reduce biting ability.

Adolescent↗
PubMed1975

The role of occlusion for the stability of fixed bridges in patients with reduced periodontal tissue support.

The present investigation reports how occlusion may be utilized to establish and maintain stability of fixed bridges in patients with markedly reduced periodontal tissue support. The material consisted of 20 adult patients, aged 27-69, with advanced periodontal breakdown, often in combination with extensive loss of teeth. After periodontal treatment, the patients were rehabilitated with fixed bridges, whose stability was evaluated once a year for 2 to 6 years. The results show that permanent stability of bridgework can be obtained in patients where there is a minimum of remaining periodontal tissue support, even in combination with marked hypermobility of individual abutment teeth. The stability was achieved by proper treatment of the diseased periodontal tissues, and by establishment of stable occlusion in the intercuspal position. When there was a risk of bridge mobility on excursive movements of the mandible, balancing contacts were established for the prevention of migration, tilting and increasing mobility. The study also shows that cantilever pontics can be used to achieve and maintain the stability of fixed bridgework.

Adult↗
PubMed1986

Extrusive mobility of teeth in adult monkeys (Macaca fascicularis).

Extrusive mobility of 15 teeth in 4 adult macaques was compared with intrusive mobility of the same teeth. The character of the load displacement and recovery records was similar; the qualitative response to repeated 4 N thrusts, 4 N loads sustained for 30 s and residual loading with 50, 30 and 10 mN, was the same whether the force was applied in an intrusive or extrusive direction. Fast and slow loading rates (100 and 1 Ns-1) both caused greater intrusion than extrusion at 4 N (p less than 0.001). Thus the mechanisms of tooth support are similar for intrusive and extrusive force. The oblique orientation of the principal fibres of the ligament may allow a greater degree of initial intrusive movement, before tension is generated, than occurs in axially-aligned fibres under extrusive force. Extrusive loading may be a convenient method for studying tension in the periodontal ligament.

Animals↗
PubMed1995

Tooth contact during dynamic lateral excursion in young adults.

Tooth contact in mediotrusion as well as the signs and symptoms of periodontal and mandibular dysfunction were recorded in healthy patients aged between 20 and 31 with Angle class I or II. Non-functional side contact (NFSC) was found in 94% of the patients, indicating that it is a common phenomenon. In cases of NFSC, the entire range of movement, and not only the final stage of tip-to-tip contact on the working side, should be recorded. Slight positive mobility with tooth faceting, as compared to the adjacent and contralateral teeth, was observed in 56 patients. There was no correlation between mediotrusion and mandibular dysfunction. The cumulative effects of NFSC are not well documented, and longitudinal follow-up studies should be carried out to clarify these.

Adult↗
PubMed1989

Environmental influences on the progression of clinical and microbiological parameters of sheep periodontal disease.

The responses of some clinical and microbiological parameters of periodontal disease (PD) in sheep were examined subsequent to transferring animals between PD-affected and PD-free farms. Previously healthy animals showed transient deterioration in some clinical, but not microbiological parameters, which suggests either that a different microbiota to the one studied may be more important in the initiation of the disease, or that sampling did not intercept periods of destructive disease activity in the early lesions. In sheep with established disease, those parameters indicative of periodontitis which included pocket depth and bleeding on probing as well as the proportions of black-pigmented Bacteroides species were not significantly altered by environmental changes. This observation suggests that once the disease is established on PD-affected farms, the hand, some clinical signs of the disease including lengthening and mobility of incisor teeth increased in sheep on the PD-affected farm relative to the PD-free farm. This suggests that the disease may have a complex aetiology.

Animals↗
PubMed1991

[Results after insertion of apical titanium cones in apicoectomy].

In a post-treatment study 50 apicoectomized teeth in 34 patients being treated with apical titanium cones between 1988 and 1990 were registered. After a mean postoperative observation period of 15.3 months, 42 teeth were still in situ and subjected to clinical and radiographical evaluations. Their mobility was measured by the periotest method. A resulting 84% success rate demonstrates the technique to be suitable to safeguard a prolonged lifetime of severe damaged teeth by use of conical pins which guarantee a perfect closing at neoapex.

Adolescent↗
PubMed1994

The influence of molar furcation involvement and mobility on future clinical periodontal attachment loss.

The purpose of this study was to determine the influence of furcation involvement (FI) and mobility (MO) on change in probing periodontal attachment level (AL) on molar teeth. Twenty-four patients were selected from The University of Michigan longitudinal periodontal clinical trial. The patients who met the entry criteria received a baseline examination and were treated by periodontal scaling and root planing followed by different periodontal surgical approaches in a split-mouth design. Patients were placed on a 3-month interval for maintenance prophylaxis and had yearly periodontal scorings for a period of 8 years. The scorings included determination of AL, FI, MO, and tooth loss (TL). Data for molar teeth from three different time periods (at entry (A) and at 1 (B) and 8 (C) years) were analyzed. The results demonstrated that teeth with FI were 2.54 times more likely to be lost when compared to teeth without FI during the maintenance period. By using paired t test approach to the probing attachment level data, molars with FI had significantly more loss between times B and C but not between A and B or A and C. Teeth with increased MO demonstrated significantly more AL between times A and C and B and C. When the interaction between MO and FI was analyzed, teeth with both FI and MO had significantly more attachment loss during the maintenance period (B to C). No statistically significant difference was found among the three different therapeutic approaches (pocket elimination, curettage, and modified Widman flap) during any of the time periods.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1975

Alumina and zirconia coated vitallium oral endosteal implants in beagles.

The purpose of this study was to assess the addition of a ceramic coating upon a Vitallium implant to increase the implant's biologic acceptability in the oral environment. The mandibular premolar teeth in 9 adult beagle dogs were removed bilaterally and these areas allowed to heal for 6 weeks. Ceramic coating with either Al2O3 or ZrO2 was carried out by flame spray deposition upon Vitallium anchor implants (9 of each), and the implants placed into the 18 healed premolar areas. Clinical and radiographic evaluation was conducted by 2 independent investigators over a 32 week period. Implants which exhibited mobility greater than II on a scale of 0 to III, at intervals of one-half, were judged unsatisfactory. After 19 weeks, all 9 Al2O3 coated implants and 5 ZrO2 coated implants were rated unsatisfactory. After 32 weeks, 4 ZrO2 coated implants were in situ with 0 or I mobility. Radiographically the width of the peri-implant space increased in direct proportion to both time and mobility. Histologic sections demonstrated encapsulating dense fibrous connective tissue which was oriented parallel to both ZrO2 and Al2O3 implants. Results suggest the zirconia used is a superior ceramic coating to the alumina. Neither seemed to increase biologic acceptability over uncoated Vitallium implants.

Aluminum↗
PubMed2007

Periodontal status and oral hygiene in two populations of cleft patients.

OBJECTIVE: To evaluate and compare the oral hygiene and periodontal status in children with unilateral and bilateral cleft lip and palate treated in Łódź, Poland, and Erlangen, Germany. DESIGN: Oral health was assessed by the presence of dental plaque, pocket depth, clinical attachment levels, and pathologic teeth mobility. SUBJECTS AND METHODS: Thirty-seven Polish and 63 German patients participated in this study. RESULTS: Poor oral hygiene was found in 57% of all subjects. In Erlangen, 60% of patients had optimal oral hygiene, compared to 19% in Łódź. The highest scores for dental plaque were noted in both groups in the cleft region. Healthy periodontium was significantly more frequent among German patients, whereas gingival bleeding was significantly more frequent among Polish patients. Pocket depths greater than 6 mm occurred only in German subjects. No statistically significant difference was observed between the amount of tooth areas with gingival recessions and the country of origin. Periodontal pockets deeper than 3.5 mm occurred more frequently during active orthodontic treatment. CONCLUSIONS: The oral hygiene regimens in Germany and Poland were not comparable, as more plaque was found in the Polish than in the German population. Plaque accumulation seems not to be a key factor in causing periodontal destruction in the cleft area. Factors other than oral hygiene should be considered of major importance in relation to the development of gingival recession on teeth in cleft areas.

Adolescent↗
PubMed2003

Analysis of etiologic factors and periodontal conditions involved with 309 abfractions.

OBJECTIVES: Non-carious cervical lesions (NCCL), also termed abfractions, have long been thought to be produced by excessive brushing. Nearly 20 years ago an occlusal etiology was proffered (Lee & Eagle 1984). Controversy still exists concerning these two concepts. The present work was carried out to verify the occurrence of signs of excessive brushing or occlusal disturbances associated with abfractions. MATERIAL AND METHODS: All first consultants were screened for the presence of abfractions during one trimester. NCCL were found in 61 patients who consequently received a thorough examination searching for clinical evidence of excessive brushing or occlusal disturbances. The presence of plaque, calculus, periodontitis, or mobility was also noted. Simple frequency and percentage were used to describe the occurrence of different clinical signs in association with the presence of abfractions. RESULTS: Abfractions often exist in mouths presenting plaque (40.1%), calculus (41.7%), or periodontitis (20.4%). Ulceration of the gingiva is a rare finding (1.6%). However, subgingival apical limits were frequent (32.5%). NCCL coexist almost systematically with occlusal wear facets (94.5%). Lack of canine disclusion (77.2%) was also closely associated with the presence of abfractions. Conversely, mobility was seldom found (1.9%). CONCLUSIONS: Clinical signs of excessive brushing were lacking, whereas signs of occlusal disturbance were very consistent with the presence of abfractions.

Adult↗
PubMed2005

A case of Tourette syndrome presenting with oral self-injurious behaviour.

Self-injurious behaviour (SIB) is deliberate harm to the body without suicidal intent, and the condition occurs in a number of psychiatric, behavioural and developmental disorders. This case report describes a 4-year-old female with SIB who presented to a paediatric dentist after the self-extraction of teeth as a result of oral motor tics. The girl repetitively ground her teeth in a monophasic lateral motion that resulted in luxation of her maxillary right primary canine, and produced generalized oral and facial pain. The parents consulted the dentist about their child's complaint of toothache. The oral findings were unexcephonable except for a mobile primary canine, but there was a history of unusual behaviour including hyperactivity, and after multidisciplinary consultation and exclusion of other systemic diseases, the subject was diagnosed as suffering from Tourette syndrome (TS). Preventive treatment using a dental splint was provided. Noncontingent reinforcement therapy was successfully used to diminish the subject's SIB.

Behavior Therapy↗
PubMed2005

[Case with implant restorations for mandibular bilateral free-end space for establishing occlusal support].

PATIENT: A 55-year-old female patient was treated with a removable partial denture for the mandibular bilateral free-end space. Since the patient did not wear the removable partial denture because of discomfort, the remaining teeth were mobile. She also complained of temporomandibular joint pain on both sides. Implant therapy was planned for the mandibular bilateral free-end space to reestablish the proper occlusal support. DISCUSSION: After setting the implant restorations for the mandibular bilateral free-end space, mobility of the remaining teeth and temporomandibular joint pain disappeared. During the observation period after treatment, no biological and biomechanical problems appeared. CONCLUSION: Implant therapy is effective not only for establishing the occlusal support but also for re-establishing the stability of remaining teeth.

Dental Implants↗