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At least 325 records · Page 18Linked to original sources
PubMed1995

[Osseointegrated implants in adolescents. A three year study].

In 15 adolescents (age 13.2 to 19.4 years) in the late dental stage implants (n = 27) were chosen to replace missing teeth due to congenital absence or trauma. The patients were followed for at least 3 years. No fixture losses occurred. Only minor loss of bone support at the fixture was observed, while adjacent tooth surfaces showed some loss. Infra-occlusion of the implant restorations was noticed in patients with residual craniofacial growth. Thus, the dental and skeletal maturation, and not the chronological age, must be taken into account to avoid infra-occlusion. Furthermore it is important to gain enough space for the fixture in the mesio-distal direction in order to avoid the risk of marginal bone loss at teeth adjacent to the implants.

Adolescent↗
PubMed1999

[Etiology of missing teeth].

This article gives a brief overview of the causes of tooth loss. Caries is still the most prominent reason for tooth loss. In patients over 40 years, periodontal reasons become more prevalent. However, also in this age category caries is the main reason. In young individuals, missing teeth are most frequently associated with agenesia or trauma. Iatrogenic damage is considered to be a casuistic cause of tooth loss. Nevertheless, some specific areas, such as in the combined treatment 'endodontic treatment--post and core--crown', can be distinguished in which tooth loss is more frequently seen.

Age Factors↗
PubMed1990

Ease of Use of Disposable Mouthguards During ECT.

Disposable, molding-type soft plastic mouthguards often used in contact sports are recommended for use in electroconvulsive therapy (ECT). They are easy to use, encourage good hygiene, and prevent soft tissue and tooth injuries during ECT.

Journal Article↗
PubMed2000

Endodontic perforation repair with resin-ionomer: a case report.

Root perforations are significant complications of endodontic treatment. However, when teeth are of strategic value, perforation repair is clearly indicated. The successful utilization and placement of a subgingival resin-ionomer restoration to repair an endodontic root perforation is demonstrated. Sustained tissue health and minimal probing depths at the surgical site demonstrate clinical success.

Adult↗
PubMed2002

[An experiment study on repairing residual dental root with a horn-shaped orifice by different materials].

When a traditional method is used to repair residual dental root with horn-shaped orifice, this kind of dental root often has to be extracted since the success rate in clinic is very low. The main reason is that the stress often concentrates on the neck and root apex, therefore the wall at the orifice is too thin to bear this kind of pressure. A new repairing method is proposed trying to preserve the residual dental root with horn-shaped orifice. Then compare the anti-fracture ability of this kind of tooth with that of no repairing. The results show that it is very effective to prevent the fracture of residual dental root repaired by chemical hard synthetic resin followed by making the post and core. However, there is no obvious difference between non-repaired and residual dental root groups repaired by traditional glass ionic adhesives. The results also provide the great possibility to preserve the residual dental root with horn-shaped orifice in clinic.

Dental Restoration, Temporary↗
PubMed2003

Non-surgical post perforation repair with mineral trioxide aggregate: a case report.

Mineral trioxide aggregate, or MTA, is a biocompatible material that has demonstrated numerous clinical applications in endodontics. It appears to be an improvement over other materials for use in procedures that involve root repair and bone healing, as it has consistently demonstrated the ability to promote regeneration of the original tissues when it is placed in contact with the periradicular tissues. This article describes the use of MTA for the successful non-surgical repair of an iatrogenic post perforation.

Adult↗
PubMed2003

Gender difference in symptoms related to temporomandibular disorders in a population of 50-year-old subjects.

AIMS: To investigate, by means of a mail questionnaire, the prevalence of symptoms related to temporomandibular disorders (TMD) in 50-year-old subjects living in the counties of Orebro and Ostergötland, Sweden. METHODS: The total population comprised 8,888 individuals, and the overall response rate was 71%. A clinical evaluation of the masticatory system was performed in subgroups to validate the responses to the questionnaire. There was satisfactory correspondence between self-reports and well-defined clinical conditions. RESULTS: Women reported, more often than men, pain from the temporomandibular joints (TMJs), TMJ sounds, bruxism, sensitive teeth, and burning mouth symptoms. The prevalences of difficulties in jaw opening, loss of anterior teeth due to trauma, and masticatory problems were greater in men than in women. No gender difference was found in the number of remaining teeth. Logistic regression analysis with pain from the TMJ as the dependent variable identified bruxism, impaired chewing efficiency, and gender (women) as the most significant risk factors. With reduced chewing ability as the dependent variable, several missing teeth constituted the highest risk, followed by pain from the TMJ, bruxism, gender (men), and loss of anterior teeth due to trauma. CONCLUSION: There were significant gender differences in reported TMD-related symptoms in 50-year-old Swedes. Bruxism was a significant risk factor for pain from the TMJ. Reduced number of teeth and pain from the TMJ were significant risk factors for impaired chewing ability.

Bruxism↗
PubMedDate not supplied

Pattern of permanent tooth loss in Nigerian children and their prosthetic replacement.

The pattern of permanent tooth loss and prosthetic replacement in 76 children were studied. Dental caries and its sequelae were the most frequent cause of tooth loss (64.47%) followed by trauma (21.05%). Molars accounted for 64.20% of tooth type lost due to dental caries and its sequelae while loss of incisors (19.75%) was due to trauma. It was observed that only incisors were replaced (81.25%) due to their conspicuous position in the mouth whereas a large number of molars were lost and none was replaced. The need to periodically assess children after tooth loss for prosthetic replacement was emphasised.

Adolescent↗
PubMed1992

Oral health in preschool children living in Sweden. Part II--A longitudinal study. Findings at three years of age.

Scientific epidemiological studies of dental health in children three years of age are relatively few in Sweden. The aim of this study was to describe the oral health of three-year-old children living in Sweden, with special reference to immigration and failure to attend health examinations. All of 671 children requested to take part in an earlier investigation (Wendt et al. 1991) were invited for a new dental examination at three years of age. A total of 632 children were examined. At the age of three years 71.7 per cent of the children were caries free. Of the children with caries, 33.5 per cent were immigrants and of the total number of immigrants, 50.5 per cent had caries compared to 21.9 per cent of the non-immigrant children. Among those children, who failed to attend the earlier investigations at one or two years of age, 61.5 per cent had caries at the age of three. Compared to studies on dental health in three-year-old children from the 70's and 80's (Hugoson et al. 1986), this study shows that dental health in three-year-old children has not improved significantly during the last decade. Furthermore, this study supports the suggestion that special preventive dental programmes should be developed for immigrant children and that extra attention should be paid to children who fail to attend health examinations and their families.

Child, Preschool↗
PubMed1992

The relative importance of reasons for tooth extraction in terms of potential tooth years of life lost (PYLL).

The aim of the present study was to introduce the potential tooth years of life lost (PYLL) approach to the analysis of data showing the incidence of tooth extraction according to the reason for extraction and to illustrate its use. Six sets of data from prospective nationwide questionnaire surveys of patients treated by systematic random samples of dentists in five European countries were translated into PYLL. Response rates ranged from 25 to 81 per cent and the number of extracted teeth from 959 to 29,397, according to the study. PYLL in Norway 1988 was calculated using the ages of 85 and 80 as cut-off points, or the average sex-specific remaining life expectancy at the age of extraction; otherwise the age of 85 was used. Mean PYLL for all reasons varied from 40.6 to 46.3 years for Norway in 1988 depending on the cut-off point used. For patients aged 21 and older PYLL85 ranged from 35.7 years for France in 1984 to 42.3 years for Sweden in 1959-61. Employing PYLL changed the rank order of the reasons for extraction based on the number of extracted teeth in some instances. It combined the two dimensions 'incidence of 'potential years of tooth function lost' into a continuous quantitative variable which was easy to understand and simple to handle analytically.

Adult↗
PubMed1992

[Root resorption].

Root resorption can be divided into two main categories: internal root resorption and external root resorption. Internal root resorption is a pathology that can lead to tooth destruction in the short term and must consequently be stopped as soon as possible by applying adequate canal treatment. Until now, despite many research studies, very little is known about its causes and the way this kind of resorption appears. There are many different forms of external root resorption and it has a very diverse etiology. An external root resorption can thus appear in case of orthodontic treatment or due to the pressure brought by cysts, tumours or impacted teeth. A trauma or an infection may also lead to the development of an external root resorption. Because they are so diverse, each of these forms of external root resorption requires a specific treatment. It should also be noted that internal root resorptions, and some forms of external resorption too, often respond favourably to a calcium hydroxide treatment.

Calcium Hydroxide↗
PubMed1992

Effects of dental trauma on pulpal and periodontal nerve morphology.

Regeneration and morphological changes in sensory peptidergic nerves in pulp and periodontium were studied after general dental trauma by means of immunohistochemistry. In control teeth also the total nerve supply was demonstrated by using antibody to the general neuronal marker, protein gene product (PGP)9.5. Two experimental rat models were used, i.e. tooth replantation and induced traumatic occlusion. Results from these studies are reviewed here. In the controls, the PGP9.5-immunoreactive(IR) nerve supply in pulp and periodontium was generally denser compared to CGRP-IR and SP-IR nerves. In the replanted teeth, regeneration of CGRP-IR nerves closely followed the pulp cell renewal. Density and distribution of the regenerated nerves showed two different patterns which seemed to depend on the capacity of the renewed pulp to form postoperative dentine. The nerve density never reached the same level as the controls. In teeth not able to form irregular dentine, the pulp was sparsely innervated and the pulp cavity was filled with innervated bone. Nerve responses in CGRP-IR and SP-IR nerves after unilateral induced traumatic occlusion in the first maxillary molar were studied at different observation periods up to 30 days. After 5 days, localized morphological nerve changes were found both in the pulp and periodontium within the total rat molar dentition. With increasing observation periods, the pulpal neural changes progressed and were extended to all pulpal areas compared to the periodontium, where the nerve responses remained localized to cervical and apical tissues throughout the experiment.

Animals↗