A ten-year follow-up study of alveolar bone loss influenced by two dissimilar Class II amalgam restorations

1987 ◽  
Vol 14 (1) ◽  
pp. 23-25 ◽  
Author(s):  
A. MARKITZIU
Keyword(s):  
Bone Loss ◽  
Alveolar Bone ◽  
Class Ii ◽  
Alveolar Bone Loss ◽  
Follow Up Study ◽  
Amalgam Restorations

Coated vs Uncoated Implants: Bone Defect Configurations After Progressive Peri-implantitis in Dogs

2014 ◽  
Vol 40 (6) ◽  
pp. 661-669 ◽  
Author(s):  
Marwa Madi ◽  
Osama Zakaria ◽  
Shohei Kasugai
Keyword(s):  
Bone Loss ◽  
Bone Defect ◽  
Alveolar Bone ◽  
Bone Defects ◽  
Class Ii ◽  
Alveolar Bone Loss ◽  
Class I ◽  
Class Iii ◽  
Implant Surface ◽  
Plasma Sprayed

In this study, hydroxyapatite coated vs uncoated implants were used to evaluate the type and dimensions of bone defects after progressive peri-implantitis in dogs. Thirty-two dental implants with 4 different surfaces—machined (M), sandblasted acid-etched (SA), 1-μm thin sputter hydroxyapatite (HA)-coated (S), and plasma-sprayed HA-coated (P)—were inserted into the mandibles of 4 beagle dogs after extracting all mandibular premolars. Experimental peri-implantitis was induced after 3 months using ligature to allow for plaque accumulation. After 4 months, ligatures were removed and plaque accumulation continued for 5 months (progression period). The open flap surgery demonstrated 3 patterns of peri-implantitis bone defect: (1) Class I defect: represented as circumferential intra-alveolar bone loss; (2) Class II defect: circumferential intra-alveolar defect with supra-alveolar bone loss exposing the implant surface; and (3) Class III defect: represented as circumferential intra-alveolar defect with supra-alveolar bone loss and buccal dehiscence. Class I was the most frequent (62.5%) defect pattern around implant types M, SA, and S; while implant type-P showed a recurring majority of Class II (62.5%). Comparison among the 4 implant groups revealed a significant defect width (DW) in implant type-P relative to other types (P < 0.01). However, no statistically significant differences were noted for defect depth (DD) (P > 0.05). We concluded that the shape and size of peri-implantitis bone defects were influenced by the type and thickness of the HA coat together with the quantity of the available peri-implant bone. Plasma-sprayed HA-coated implants showed larger peri-implant defects than did thin sputter HA-coated implants.

Metacarpal Cortical Bone Area Predicts Tooth Loss in Men

2016 ◽  
Vol 2 (2) ◽  
pp. 179-186 ◽  
Author(s):  
E.K. Kaye ◽  
P. Vokonas ◽  
R.I. Garcia
Keyword(s):  
Bone Loss ◽  
Cortical Bone ◽  
Tooth Loss ◽  
Alveolar Bone ◽  
Metacarpal Bone ◽  
Alveolar Bone Loss ◽  
Bone Area ◽  
Number Of Teeth

The relationship between bone mineral density and tooth loss in men is unclear. The aim of this retrospective cohort study was to determine if relative metacarpal bone area (MCA) predicts tooth loss in a cohort of 273 male participants in the Dental Longitudinal Study and Normative Aging Study of the Department of Veterans Affairs. Outer and inner cortical bone widths of the middle metacarpal of the nondominant hand were measured on anteroposterior hand radiographs approximately 11 y apart. Baseline MCA was computed and categorized into quartiles. The men were followed from 1971 to 2015. Incident tooth loss during 2 intervals was examined: concurrent with the MCA measurements and long term over the total follow-up (17 ± 7 y). Radiographic alveolar bone loss (ABL) was measured on periapical radiographs as a percentage of the distance from the cementoenamel junction to root apex, and the number of teeth with ABL >40% was computed. Negative binomial generalized linear regression models estimated the mean number of teeth with ABL >40% and the number lost (concurrent and total), controlling for age, smoking, number of teeth at baseline, percentage teeth with ≥1 decayed/filled surface, and years of follow-up. At baseline, MCA was inversely related to number of teeth with >40% ABL. Men in the lowest MCA quartile (Q1) lost the most teeth, both concurrent with MCA measurements and long term, but the association differed by caries level (≤55% or >55% decayed/filled teeth). At the low caries level, the numbers lost in Q1 were 29% greater than in the highest MCA quartile (Q4). At the high caries level, the numbers lost in Q1 were more than twice those in Q4. Associations were attenuated when further controlled for number of teeth with ABL>40%. These findings suggest that systemic bone status plays a role in tooth loss and that the association may be mediated by alveolar bone loss. Knowledge Transfer Statement: Low relative metacarpal bone area was related to loss of alveolar bone and incident tooth loss in men. This information extends previous research, primarily studies of women, showing that osteoporosis adversely affects oral health. Knowledge of a patient’s systemic bone status may be important for managing his or her periodontal disease. Tooth loss in the absence of periodontal inflammation may signify systemic bone loss. Interprofessional communication is central to maintaining optimal oral and bone health.

scholarly journals Alveolar bone loss around mandibular anterior teeth in Class I, II, and III malocclusions: a CBCT evaluation study

2020 ◽  
Author(s):  
Zixiao Wang ◽  
Zhigui Ma ◽  
Chi Yang
Keyword(s):  
Bone Loss ◽  
Alveolar Bone ◽  
Class Ii ◽  
Alveolar Bone Loss ◽  
Class I ◽  
Class Ii Malocclusion ◽  
Class Iii ◽  
Bone Thickness ◽  
Anterior Teeth ◽  
Significant Difference

Abstract Background: To quantitatively and qualitatively evaluate alveolar defects of mandibular anterior alveolar bone in three different types of malocclusion with cone-beam computed tomography (CBCT).Methods: A total of 542 teeth from 30 skeletal class I malocclusion (mean age: 19.26±5.63), 33 class II malocclusion (mean age: 19.36±4.17), and 28 class III malocclusion (mean age: 21.47±4.53) patients were evaluated with CBCT. Sagittal sectional views were evaluated with regard to labial and lingual alveolar bone thickness and vertical alveolar bone level. Analysis of variance and Tukey’s test were used for statistical comparisons at P<.05 Results: Qualitative analysis: Class II (64.47%) and Class III malocclusions (58.43%) had higher prevalence of dehiscence than Class I malocclusions (32.96%),P<0.05. No significant difference was found in the prevalence of fenestration among the three groups. Quantitative analysis: In general, Class II and III groups had lesser alveolar bone volume than the Class I group. Furthermore, the vertical alveolar height and coronal alveolar bone thickness in Class II malocclusion was significantly lesser than that in the Class III group. Conclusions: The Class II group, followed by the class III group, showed the most severe alveolar bone deficiency For these patients undergoing orthodontic treatment, special care should be taken to avoid aggravated preexisting alveolar bone loss in the mandibular anterior teeth.

Bone loss in patients with Crohn's disease: A longterm-follow up study

2001 ◽  
Vol 120 (5) ◽  
pp. A628-A628
Author(s):  
P CLEMENS ◽  
V HAWIG ◽  
M MUELLER ◽  
J SCAENZLIN ◽  
B KLUMP ◽  
...  
Keyword(s):  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Bone Loss ◽  
Follow Up Study

EFFECTS OF ALENDRONATE THERAPY ON CYCLOSPORINE INDUCED ALVEOLAR BONE LOSS : A MORPHO-METRIC AND BIO-CHEMICAL STUDY IN RATS

2016 ◽  
Vol 4 (4) ◽  
pp. 947-955
Author(s):  
Sneha R Bhat ◽  
◽  
Aravind R Kudva ◽  
Dhoom S Mehta ◽  
◽  
...  
Keyword(s):  
Bone Loss ◽  
Alveolar Bone ◽  
Chemical Study ◽  
Alveolar Bone Loss

3,4,5-Trihydroxybenzoic acid attenuates ligature-induced periodontal disease in Wistar rats.

2020 ◽  
Vol 19 ◽  
Author(s):  
Ozkan Karatas ◽  
Fikret Gevrek
Keyword(s):  
Bone Loss ◽  
Gallic Acid ◽  
Wistar Rats ◽  
Alveolar Bone ◽  
Alveolar Bone Loss ◽  
Collagenase Activity ◽  
Osteoblastic Activity ◽  
Cell Counts ◽  
Experimental Periodontitis ◽  
Anti Inflammatory

Background: 3,4,5-Trihydroxybenzoic acid, which is also known as gallic acid, is an anti-inflammatory agent who could provide beneficial effects in preventing periodontal inflammation. The present study aimed to evaluate the anti-inflammatory effects of gallic acid on experimental periodontitis in Wistar rats. Alveolar bone loss, osteoclastic activity, osteoblastic activity, and collagenase activity were also determined. Methods: 32 Wistar rats were used in the present study. Study groups were created as following: Healthy control (C,n=8) group; periodontitis (P,n=8) group; periodontitis and 30 mg/kg gallic acid administered group (G30,n=8); periodontitis and 60 mg/kg gallic acid administered group (G60,n=8). Experimental periodontitis was created by placing 4-0 silk sutures around the mandibular right first molar tooth. Morphological changes in alveolar bone were determined by stereomicroscopic evaluation. Mandibles were undergone histological evaluation. Matrix metalloproteinase (MMP)-8, tissue inhibitor of MMPs (TIMP)-1, bone morphogenetic protein (BMP)-2 expressions, tartrate-resistant acid phosphatase (TRAP) positive osteoclast cells, osteoblast, and inflammatory cell counts were determined. Results: Highest alveolar bone loss was observed in the periodontitis group. Both doses of gallic acid decreased alveolar bone loss compared to the P group. TRAP-positive osteoclast cell counts were higher in the P group, and gallic acid successfully lowered these counts. Osteoblast cells also increased in gallic acid administered groups. Inflammation in the P group was also higher than those of C, G30, and G60 groups supporting the role of gallic acid in preventing inflammation. 30 and 60 mg/kg doses of gallic acid decreased MMP-8 levels and increased TIMP-1 levels. BMP levels increased in gallic acid administered groups, similar to several osteoblasts. Conclusion: Present results revealed an anti-inflammatory effect of gallic acid, which was indicated by decreased alveolar bone loss and collagenase activity and increased osteoblastic activity.

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