1,721,020 research outputs found
Dr. Giuseppe Perinetti comments on Dr. Nozomi Maeda, et al.'s article (pps. 194-203) in CRANIO's July, 2011 issue.
No full textDental malocclusion is not related to temporomandibular joint clicking: a logistic regression analysis in a patient population
No full textRisk/prevention indicators for the prevalence of dental caries in schoolchildren: results from the Italian OHSAR Survey.
No full textThe Italian Oral Health of Schoolchildren of the Abruzzo Region (OHSAR) Survey was designed to assess indicators associated with the prevalence of caries in both the primary and permanent dentitions in the same schoolchildren, and it comprised a representative sample of 5,938 7-, 9- and 11-year-old schoolchildren from three provinces within the region of Abruzzo, Italy, a low fluoride concentration area. Gender, age, geographic location, socioeconomic level, dietary and oral hygiene habits, and the use of F supplements were all considered as indicators. The subsequent multivariate analyses showed that the socioeconomic level, snack consumption frequency, consumption of sweets and the use of F supplements were mostly associated with caries prevalence in both dentitions. Other indicators, such as gender, age, geographic location, between-meal snack consumption frequency, consumption of sweet drinks, toothbrushing frequency and onset of regular toothbrushing habits also showed some significant associations with dental caries across the age groups and/or dentitions. Of interest, the consumption of commercial bottled mineral water was also seen to be a preventive indicator for dental caries of the primary dentition, particularly in the 7-year-old group. The consumption of sweet snacks, use of interdental floss and kind of toothbrush mainly used (manual or electric) did not show any relevant association with the outcomes. The strong effect of the geographic location, socioeconomical level and the preventive effects of commercial bottled mineral water are worth further investigation
Longitudinal monitoring of subgingival colonization by Actinobacillus actinomicemcomitans, and crevicular alkaline phosphatase and spartate aminotransferase activities around orthodontically treated teeth
No full textJ Clin Periodontol. 2004 Jan;31(1):60-7.
Longitudinal monitoring of subgingival colonization by Actinobacillus actinomycetemcomitans, and crevicular alkaline phosphatase and aspartate aminotransferase activities around orthodontically treated teeth.
Perinetti G, Paolantonio M, Serra E, D'Archivio D, D'Ercole S, Festa F, Spoto G.
Source
Unit of Orthodontics, Department of Oral Sciences, School of Dentistry, University G. D'Annunzio, Chieti, Italy. [email protected]
Abstract
OBJECTIVES:
During orthodontic treatment, changes in subgingival plaque colonization and tissue inflammation and remodelling have been described. This study uses a longitudinal design to examine subgingival colonization of Actinobacillus actinomycetemcomitans (Aa) and alkaline phosphatase (ALP) and aspartate aminotransferase (AST) activities in gingival crevicular fluid (GCF) in order to assess whether these parameters have potential as biomarkers of tissue responses to orthodontic tooth movement in humans.
MATERIALS & METHODS:
Twenty-one patients (ages: 11.2-22.5; mean 17.1 +/- 3.3 years) participated in the study. An upper canine from each patient undergoing treatment for distal movement served as the test tooth (DC), and its contralateral (CC) and antagonist (AC) canines were used as controls. The CC was included in the orthodontic appliance, but was not subjected to the orthodontic force; the AC was free from any orthodontic appliance. The subgingival plaque and GCF around the experimental teeth was harvested from both mesial and distal tooth sites immediately before appliance activation and on day 28. Clinical gingival condition was evaluated at the baseline and at the end of the experimental period. Aa colonization was determined by culture methods, while ALP and AST activities were evaluated spectrophotometrically.
RESULTS:
Throughout the study, the clinical conditions worsened in both the DCs and the CCs as compared with the baseline, whereas no significant differences were found between the DCs and the CCs, or between mesial and distal sites of each of these teeth on day 28. In the ACs, clinical parameters remained at baseline levels throughout the study. Similar results were found for Aa colonization, which increased significantly on day 28 in the DC and CC groups. On day 28, ALP and AST activities were significantly elevated in all sites from the DC and CC groups as compared with the ACs, where, conversely, enzymatic activities remained at the baseline levels. However, ALP activity in the DC group was significantly greater than in the CCs at mesial (tension) sites on day 28, while AST activity in the DCs was significantly elevated as compared with the CC group at the distal (compression) sites. Greater ALP activity in the DC group was observed at the tension sites compared with the compression sites on day 28.
CONCLUSIONS:
Our results suggest that Aa subgingival colonization, and ALP and AST activities in GCF reflect the tissue responses that occur in the periodontium during orthodontic treatment
Autogenous periosteal barrier membranes and bone grafts in the treatment of periodontal intrabony defects of single-rooted teeth: a 12-month reentry randomized controlled clinical trial.
No full textBACKGROUND: This randomized clinical trial compares the outcomes of combination treatment by autogenous periosteal membranes and bone graft versus guided tissue regeneration (GTR) with collagen membranes or open-flap debridement (OFD) only in the treatment of intraosseous defects.
METHODS: Forty-two patients affected by moderate to severe chronic periodontitis were enrolled. Each patient had one deep intrabony defect (≥6 mm). They were randomly assigned into three groups: patients treated with 1) an OFD procedure alone (OFD group); 2) a GTR procedure with collagen membranes (GTR group); and 3) a combined treatment procedure by autogenous periosteal membranes and autogenous bone chips (aCPRT group). Clinical and intrasurgical examinations including probing depth (PD), clinical attachment level (CAL), gingival recession (GR), and defect bone level (DBL) were performed at baseline and after 1 year.
RESULTS: After 1 year, all of the evaluated clinical parameters showed statistically significant changes from baseline within each group (P <0.01). The GTR and aCPRT groups had significantly greater PD reductions (5.2 and 4.4 mm, respectively) and CAL (3.2 and 3.9 mm) and DBL gains (2.4 and 3.1 mm) compared to the OFD group (PD, 2.9 mm; CAL, 1.6 mm; DBL, 1.5 mm); moreover, the aCPRT group showed a significantly smaller GR increase (0.5 mm) and a greater DBL gain (3.1 mm) compared to the GTR group (2 and 2.4 mm, respectively; P <0.05).
CONCLUSIONS: Both the GTR and aCPRT treatments produce additional clinical benefits over OFD alone. Moreover, the aCPRT technique can minimize post-surgical GR and produce better defect bone-level improvement
Skeletal and dental effects produced by functional regulator-2 in pre-pubertal class II patients: a controlled study.
No full textBACKGROUND:
Whether skeletal effects are obtained by functional appliances in class II subjects is still controversial. In this regard, most of the available studies did not clearly identify the growth phases (i.e. pubertal or not) of the treated patients. This retrospective controlled study aimed at evaluating the skeletal and dental changes in class II subjects produced by the functional regulator (FR)-2 treatment during the pre-pubertal growth phase.
METHODS:
The data were derived from records obtained at a university dental clinic. A total of 17 treated subjects and a total of 17 untreated controls, all pre-pubertal, matched for malocclusion, age (8.8±1.5 years) and sex (18 females, 16 males), were included. The overall observational period was 1.6±0.8 years for both groups.
RESULTS:
Only minor skeletal changes with very little clinical relevance were seen after the observational period. Most of the changes produced by the FR-2 treatment were at the dental level including palatal tipping of the maxillary incisors and slight proclination of the mandibular incisors, both accounting for the noteworthy overjet reduction.
CONCLUSIONS:
The present study has shown that functional treatment of class II malocclusion by FR-2 appliance during the pre-pubertal growth phase is limited to modification at the dental level
Visual assessment of the cervical vertebral maturation stages a study of diagnostic accuracy and repeatability
Full text linkAbstract Objective: To evaluate the diagnostic accuracy and repeatability of the visual assessment of the cervical vertebral maturation (CVM) stages. Materials and Methods: Ten operators underwent training sessions in visual assessment of CVM staging. Subsequently, they were asked to stage 72 cases equally divided into the six stages. Such assessment was repeated twice in two sessions (T1 and T2) 4 weeks apart. A reference standard for each case was created according to a cephalometric analysis of both the concavities and shapes of the cervical vertebrae. Results: The overall agreement with the reference standard was about 68\% for both sessions and 76.9\% for intrarater repeatability. The overall kappa coefficients with the reference standard were up to 0.86 for both sessions, and 0.88 for intrarater repeatability. Overall, disagreements one stage and twp stage apart were 23.5\% (T1) and 5.1\% (T2), respectively. Sensitivity ranged from 53.3\% for CS5 (T1) to 99.9\% for CS1 (T2), positive predictive values ranged from 52.4\% for CS5 (T2) to 94.3\% for CS6 (T1), and accuracy ranged from 83.6\% for CS4 (T2) to 94.9\% for CS1 (T1). Conclusions: Visual assessment of the CVM stages is accurate and repeatable to a satisfactory level. About one in three cases remain misclassified; disagreement is generally limited to one stage and is mostly seen in stages 4 and 5
Cervical vertebral maturation: Are postpubertal stages attained in all subjects?
No full textIntroduction: The cervical vertebral maturation (CVM) method comprises 6 stages reported to be prepubertal (1 and 2), pubertal (3 and 4) and postpubertal (5 and 6), and its use has been recommended for planning treatment timing in orthodontics. Reliable use of the method implies that pubertal stages have to mature into postpubertal as soon as the growth peak is terminated. The present study was aimed at determining whether postpubertal CVM stages 5 or 6 are attained in all subjects. Methods: A total of 450 adult subjects (270 females and 180 males; mean age, 30.4 ± 27.3 years; range, 20-45 years) seeking orthodontic treatment and having a lateral head film were included in the study. Customized cephalometric analysis was used, and each recording was converted into an individual CVM code according to the concavities of the C2 to C4 and shapes of C3 and C4. The retrieved CVM codes, either falling within the reported norms (regular cases) or not (exception cases), were also converted into the CVM stages and a newly introduced CVM score (0-9) capable of defining intermediate stage. Results: The most frequent CVM stage was 5, while the CVM stage 6 was attained in only one third of the sample. Up to about 11% of adult subjects showed the pubertal CVM stage 4. Irrespective of the CVM stage or CVM score, no significant differences were seen between the sexes or across ages. The C4 showed a rectangular vertical shape in only 16.4% of the cases. Conclusions: The percentage of adult population maintaining a pubertal CVM stage 4 is not high, but still relevant from a clinical standpoint. In light of this finding, planning treatment timing-based only on CVM appears not fully reliable
A positioning device for computed tomography: a clinical report. .
No full textThis clinical report describes a device (Centrascan) used to assist in the correct alignment of the patient's head during computed tomography (CT) assessment of a proposed implant site. To obtain the desired anatomic detail, CT requires precise alignment of the axial images at right angles to the long axis of the proposed implant. This clinical report compared the anatomic morphology of a projected implant site derived from axial images provided by DentaScan software analysis of the CT scan acquisition. Images from a conventional scan, with the patient's head aligned along the frontal plane (perpendicular to the Frankfort plane) and along the sagittal plane (coinciding with either the cortical bone of the hard palate or the inferior border of the mandible), were compared with images acquired by use of the Centrascan device. The two scans differed substantially. In particular, the cross-sectional images obtained by the conventional procedure showed a distorted anatomy; conversely, the images obtained by the Centrascan procedure showed a better reproduction of the examined area. The Centrascan device seemed to help the radiologist achieve a more correct alignment of the patient's head during CT scan acquisition. Further studies are necessary to fully explore the relative technical merits of the Centrascan device
- …
