A randomized clinical study of two interceptive approaches to palatally displaced canines. Two interceptive approaches to palatally displaced canines: a prospective longitudinal study. Pulp exposure occurrence and outcomes after 1- or 2-visit indirect pulp therapy vs complete caries removal in primary and permanent molars. Observations on dental caries in primary teeth after frequent fluoride toplications in a program involving other preventives. Longitudinal study on the effect of early interceptive treatment in 4-year-old children with unilateral cross-bite. Fissure sealing of permanent first molars in children receiving a high standard of prophylactic care. Efficacy of the nocturnal bite plate in the control of bruxism for 3 to 5 year old children. A clinical investigation of the correction of unilateral first molar crossbite with a transpalatal arch. Long-term follow-up of early treatment of unilateral forced posterior cross-bite. Orofacial status.
This study evaluated the effectiveness of two interceptive approaches to palatally displaced canines (PDC), i.e. extraction of the primary canines alone or in association with the use of a cervical-pull headgear. The randomized prospective design comprised 75 subjects with PDC (92 maxillary canines) who were randomly assigned to three groups: extraction of the primary canine only (EG), extraction of the primary canine and cervical-pull headgear (EHG), and an untreated control group (CG). Panoramic radiographs were evaluated at the time of initial observation (T1) and after an average period of 18 months (T2). At T2, an evaluation of the success of canine eruption was undertaken. Between-group statistical comparisons, Kruskal-Wallis test with Bonferroni correction, were performed on the T1-T2 changes of the diagnostic parameters on panoramic radiographs and the prevalence rates of success in canine eruption. A superimposition study on lateral cephalograms at T1 and T2 was carried out to evaluate the changes in the sagittal position of the upper molars in the three groups. The removal of the primary canine as an isolated measure to intercept palatal displacement of maxillary canines showed a success rate of 65.2 per cent, which was significantly greater than that in the untreated controls (36 per cent). The additional use of a headgear resulted in successful eruption in 87.5 per cent of the subjects, with a significant improvement in the measurements for intraosseous canine position. The cephalometric superimposition study showed a significant mesial movement of the upper first molars in the CG and EG when compared with the EHG. This study evaluated the effectiveness of two interceptive approaches to palatally displaced canines (PDCs), ie, extraction of the deciduous canines alone and in association with the use of a cervical pull headgear. The prospective longitudinal design of the investigation included 46 subjects with PDC (62 maxillary canines) who were randomly assigned to one of three groups (1) a group that underwent the extraction of the deciduous canine only, (2) a group that received in addition the use of a cervical pull headgear, and (3) an untreated control group. Panoramic radiographs were evaluated at initial observation (T1) and after an average period of 18 months (T2). Cervical vertebral maturation was assessed on lateral cephalograms at T1. Successful or unsuccessful canine eruption was assessed 48 months after T1. The between-group statistical comparisons were performed on the T1-T2 changes in the diagnostic parameters on panoramic radiographs, the prevalence rates of successful canine eruption, and the amount of time for canine eruption. The removal of the deciduous canine as an isolated measure to intercept palatal displacement of maxillary canines showed a prevalence rate of 50% success, which was not significantly greater than the success rate in untreated controls. The use of a headgear in addition to the extraction of the deciduous canine induced successful eruption in 80% of the cases, with a significant improvement in the measures for intraosseous canine position. There was no significant difference between the two interceptive approaches in the time required for canine eruption. The purpose of this study was to examine whether 1- or 2-visit indirect pulp therapy (IPT) is more successful and to determine if the operator can successfully decide when to stop removing caries without exposing the pulp.
                A total of 154 teeth (94 primary second molars and 60 young permanent first molars) were included in the study from a total of 123 4- to 15-year-old patients. The teeth had deep carious lesions but lacked the preoperative signs and symptoms of irreversible pulpitis. The teeth were randomly selected and treated either with 1-visit IPT, 2-visit IPT, or direct complete excavation (DCE). Follow-up examinations were conducted on the teeth over 1 year at 3-month intervals.
                The pulp was exposed in 12 teeth (22%) treated by DCE, whereas 3 teeth (6%) were treated by 1-visit IPT and 4 teeth (8%) with 2-visit IPT. A statistically significant difference was found between IPT and DCE groups in terms of pulp exposure (P<.05). The teeth without pulp exposure showed normal clinical and radiographic conditions during the 1-year follow-up, except for 3 primary teeth.
                Indirect pulp therapy in both primary and young permanent teeth can be used successfully with a 1- or 2-visit approach. The anticaries effect of repeated toplications with APF gel was assessed in the primary dentition of 2-6-year-olds after 8, 18 and 28 months. Frequent, but less than daily, topical fluoride therapy appeared to have little effect in pre-school children consuming water-borne fluoride and receiving other traditionally recommended modalities of prevention. To evaluate the results of early interceptive grinding and also the possibility of self-correction of unilateral cross-bite, 76 4-yr-old children with this malocclusion were divided into one treated and one untreated group. In the treatment group 50% of the children exhibited a normal transverse occlusion evaluated in the mixed dentition, at the age of 9. In the untreated group only 17% showed a spontaneous correction of the cross-bite. Among the studied dental variables the "max./mand. arch width difference" especially in the canine region was found to be a valuable predictor indicating whether cross-bite can be successfully treated in preschoolchildren by selective grinding. The results of this study support early treatment of unilateral cross-bite and gives the criteria whereby successful treatment by selective grinding may be expected. The efficiency of sealing the occlusal fissures of permanent first molars was studied in a group of patients 6-9 yr of age receiving a high standard of prophylactic care. Very soon after the eruption one of the teeth in a homomaxillary pair was sealed, and the contralateral was used for control. The control teeth were painted with a fluoride varnish (Duraphat) every 6 months during the trial. 210 sites in 121 children were sealed and followed for a mean observation period of 23 months. At the end of the study, the retention rate was 62.9%, the percentage of effectiveness 24.2%, and the net gain 7.1%. The dmft index (primary molars and canines) was recorded for each patient at the time sealing was performed. A relationship between the caries prevalence in the primary teeth and the susceptibility for fissure caries in the control teeth was found. Effectiveness and net gain was highest in the group of children with 3-6 dmft. Bruxism occurs in nearly 60% of children between 3 and 5 years, with important repercussions to the different components of the stomatognathic system. Nevertheless, there is little information in the literature about this topic. The aim of this study was to compare two groups of children with bruxism. One group was not submitted to treatment, serving as a control. To the other group, nocturnal bite plate was made. Cast models were made for both groups, to evaluate the progression of wear facets, during 8 months. The results are as follows: The 4 children of the control group displayed increased wear facets during the study period. On the other hand, of the 5 children that used nocturnal bite plate, showed no increase of wear facets, even after the removal of the device. From this study, we can conclude that the use of nocturnal bite plate is efficient against bruxism in 3- to 5-year-old children. The correction of a unilateral first molar crossbite with a Goshgarian type of transpalatal arch was evaluated in 35 children from 6 years, 8 months to 15 years, 11 months old. Fifteen of the children were treated with an arch activated for expansion only and 20 children with an arch activated in a similar way but with the inclusion of buccal root torque of the anchorage tooth. With both types of activation, the arches worked in a statically determinate system, i.e., the tooth in crossbite was allowed to tip buccally. The movements of the first molars as a result of the treatment were monitored by measurements on dental casts and frontal cephalometric roentgenograms. In addition, the width of the midpalatal suture was measured on occlusal roentgenograms of the maxilla. In the children treated with an arch activated only for expansion, the molars on both sides of the dental arch moved buccally during the treatment. In the children treated by torque activation, on the other hand, there was a considerable buccal movement of the molar on the side of the crossbite without any significant buccal movement of the anchorage tooth. In individual cases, the molar on the noncrossbite side moved and tipped palatally and in some cases buccally but to a minor degree. With both types of activation, there was only a slight change in inclination of the transverse occlusal plane through the first molars; the plane opened up slightly toward the side of the crossbite. For both types of activation, there was a slight widening of the palatal suture during the treatment.(ABSTRACT TRUNCATED AT 250 WORDS) Twenty-nine subjects, 20 years old on average and all treated at 4 years of age for unilateral forced posterior dento-alveolar cross-bite by grinding or by expansion of the upper dental arch, were clinically examined to evaluate the long-term effects of their treatment. The frequency of successful treatment-indicated as stable correction of the cross-bite-by means of only 1 treatment sequence was 59%; by grinding, 57%; and by expansion, 60%. The 18 subjects that had only been treated at the age of 4 years formed the 'early group' in our study. Eleven of our subjects had been retreated later in the mixed or permanent dentition because of a relapse of the unilateral forced posterior cross-bite and formed the 'late group'. A significantly higher frequency of mouth breathing, breathing obstacles, and snoring was found in this group. According to our clinical investigation, 2 of the subjects in our cohort still had a unilateral forced posterior cross-bite. Our findings regarding masticatory performance, bite force, and endurance showed no significant differences between the initial cross-bite and the healthy sides or between the early and the late group subjects, which showed that the masticatory function of the treated subjects was symmetrical. Grinding and expansion treatments seem to display similar success rates in the long-term regarding correction of unilateral posterior forced cross-bite.
There is currently no evidence of the effects of extraction of primary canine teeth in 10-13 year old children with one or two palatally displaced permanent canine teeth.