THERMOGRAPHY OF PERIODONTAL TISSUES DURING DIATHERMOCOAGULATION RETRACTION

Gingival retraction at the preparatory stage of orthopedic teeth restoration with fixed dental appliances is a common procedure in daily dental practice, the success of which will depend on the effectiveness of orthopedic treatment in general. Given certain shortcomings of well-known mechanical and mechano-chemical retraction techniques, the consequences of which may lead to unpredictable aesthetic results, the purpose of this work was to study changes in temperature of marginal gums around teeth at different stages of their orthopedic restoration by fixed metal-ceramic structures based on the thermography findings. The study included 54 patients aged 20 to 60 years, with partial or complete destruction of the coronal part, among whom there were 29 people (53.7%) who underwent gum retraction by diathermocoagulation, and 25 people (46.3%) who underwent retraction of the gingival groove with cotton threads "Ultrapak" (“Ultradent", USA). Measurements were performed prior the operation, during it, in 60 minutes after the completion of diathermocoagulation, and in 7 days after fixation of the cermet crown (14 days after retraction). The thermographic study showed that immediately after the procedure of diathermocoagulation retraction, the temperature of the marginal mucosa went up from 27.3° C (St.Err. 0.28) to 60.2° C (St.Err. 0.72) in the group 1, while in group 2 after mechanochemical retraction there was an increase in temperature from 27.3° C (St.Err. 0.30) to 28.9° C (St.Err. 0.3). 60 minutes after the end of the retraction, the average thermographic index in the group 1 was 28° C (St.Err. 0.28), while in group 2 it equalled to 28.1° C (St.Err.0.31). Control thermography on the 14th day after gum retraction showed a slight decrease to 27.1° C (St.Err. 0.29) in the group 1, and 26.72° C (St.Err. 0.29) in the group 2. The use of diathermocoagulation method of preparation (retraction) of abutment teeth in case of partial or complete destruction of their coronal part improves the quality of orthopedic treatment of patients by using metal-ceramic constructions of dentures. Analysis of thermodynamics in dental and periodontal tissues using the latest thermographic devices with subsequent computer processing of information obtained is of great prospects for further in-depth research.

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Features of free skin grafting to correct post-burn neck deformities in children

Pediatric Traumatology Orthopaedics and Reconstructive Surgery ◽

10.17816/ptors41937 ◽

2021 ◽

Vol 9 (1) ◽

pp. 77-86

Author(s):

Olga V. Filippova ◽

Konstantin A. Afonochev

Keyword(s):

Preventive Measures ◽

Preventive Measure ◽

Skin Grafting ◽

Long Term Results ◽

Neck Extension ◽

Scar Contracture ◽

Aesthetic Results ◽

Group 2 ◽

Grade Iii ◽

Group 1

BACKGROUND: In the literature, various methods of reconstructive plastic surgery for neck cicatricial contractures, from free skin grafting to expander dermotension and microsurgical tissue complex autotransplantation, are widely covered. However, very little attention has been paid to conservative measures aimed at stabilizing surgical treatment results. AIM: This study aims to evaluate the long-term results of free skin grafting of neck granulating wounds after burns and secondary relapsing scar contracture correction. The study also aims to analyze the causes of poor results and demonstrate the possibility of using free skin grafting to correct neck contractures with basic preventive measures. MATERIALS AND METHODS: Forty-six patients with neck burn cicatricial sequelae were treated at the clinic of trauma sequelae in H. Turner National Medical Research Center from 2017 to 2019. The patients were divided into two groups: group 1 patients with neck contractures after plasty of granulating wounds with free skin autografts, and group 2 patients with a relapse of neck contracture after corrective reconstructive surgery. Anamnestic data analysis enabled establishing the actual volume of preventive rehabilitation measures in both patient groups. The classification by N.E. Povstyany (1973) was used to determine the severity of contracture. RESULTS: The most severe neck contractures, grade III and IV, developed in group 1 patients (grade III 41.2%). In group 2 patients, there was a limitation of neck extension, corresponding to grades I (33.3%) and II (58.3%). Conservative preventive measures as immobilization and compression therapy were absent in group 1 in 100% of cases. The most common preventive measure was the prescription of topical anti-scar drugs. Two-stage skin grafting with full-thickness skin autografts combined with conservative measures made it possible to correct neck contractures of grade I-IV completely and obtain good aesthetic results. CONCLUSION: The main reason for neck contractures development is the retraction of skin autografts, which inevitably develops in the absence of appropriate preventive measures. Correction of neck contractures using free skin grafting combined with preventive immobilization using a Schantz collar and a compression half-mask allows obtaining good functional and aesthetic results.

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Investigation of the Expression of Inflammatory Markers in Oral Biofilm Samples in Patients with Systemic Scleroderma and the Association with Clinical Periodontal Parameters—A Preliminary Study

Life ◽

10.3390/life11111145 ◽

2021 ◽

Vol 11 (11) ◽

pp. 1145

Author(s):

Mayte Buchbender ◽

Amelie Lugenbühl ◽

Jakob Fehlhofer ◽

Christian Kirschneck ◽

Jutta Ries ◽

...

Keyword(s):

Mouth Opening ◽

Gingival Recession ◽

Systemic Scleroderma ◽

Clinical Parameters ◽

Clinical Attachment Loss ◽

Expression Levels ◽

Periodontal Tissues ◽

Healthy Control ◽

Group 2 ◽

Group 1

Background: Systemic scleroderma (SSc) has multiple orofacial effects. The aim of this study was to analyze the expression of inflammatory mediators in biofilm samples. It was hypothesized that different expression levels and clinical associations might be drawn. Methods: A total of 39 biofilm samples from group 1 = SSc and group 2 = healthy control were examined for the expression levels of interleukin (IL)-2,-6, and -10; matrix metalloprotease (MMP)-9; and surface antigens CD90 and CD34 by quantitative real-time PCR and clinical parameters. Relative quantitative (RQ) gene expression was determined using the ∆∆CT method. Results: The mean bleeding on probing values (p = 0.006), clinical attachment loss (CAL) (p = 0.009), gingival recession (p = 0.020), limited mouth opening (p = 0.001) and cervical tooth defects (p = 0.011) were significantly higher in group 1. RQ expressions of IL-2 and CD34 were significantly lower, IL-6, MMP-9, and CD90 were significantly higher. There was a significant positive correlation of IL-6/MMP-9 and negative correlation of mouth opening/CAL and IL-6/CAL. Conclusion: Different expression levels of IL-2, IL-6, MMP-9, CD34 and CD90 were detected in biofilm samples from patients with SSc compared to control. An immunological correlation to the clinical parameters of mouth opening and CAL was shown; thus, we conclude that SSc might have an impact on periodontal tissues.

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The use of a “chimeric” autotissue complex from the subscapularis vascular basin for maxillary reconstruction after malignant tumors resection

Head and neck tumors (HNT) ◽

10.17650/2222-1468-2021-11-3-18-29 ◽

2021 ◽

Vol 11 (3) ◽

pp. 18-29

Author(s):

M. V. Bolotin ◽

V. A. Sobolevsky ◽

I. V. Orlova ◽

I. M. Gelfand ◽

H. Chen

Keyword(s):

Malignant Tumors ◽

Functional Results ◽

Vascular Lesions ◽

Total Maxillectomy ◽

Aesthetic Results ◽

Scapular Flap ◽

Group 2 ◽

Maxillary Defects ◽

Scapular Region ◽

Group 1

The objective of this work – to evaluate the results of reconstructive interventions using free revascularized tissue complexes of the scapular region in patients after maxillary resection for malignant tumors. Materials and methods. Between 2014–2020 the post-resection maxillary defects were replaced with free blood-sup plied flaps of the scapular region in 19 patients. In Group 1 (n = 10), the defect was eliminated after total maxillectomy with preservation of the eyeball using a “chimeric” tissue complex, parts of which were positioned in several planes. In Group 2 (n = 9), total and subtotal defects of the hard palate and alveolar process were replaced using a free flap with the inclusion of the scapula angle, which was placed horizontally. The functional and aesthetic results of the reconstructions, the degree of morphological correspondence of the reconstructed structures, as well as the incidence of postoperative complications were assessed. Results. In Group 1 total necrosis of the flap was noted in 2 cases (20 %), in 1 (10 %) case – necrosis of the skin fragment). In Group 2 graft necrosis was observed in 1 (11 %) patient. Satisfactory and excellent aesthetic and functional results were achieved in 6 (60 %) patients in Group 1 and 8 (89 %) patients in Group 2. Conclusion. The scapular flap has a number of advantages for microsurgical reconstruction, including the presence of a long vascular pedicle with large vessels, inclusion of different tissues, possibility of harvesting a “chimeric” version (with significant mobility of parts), low rate of vascular lesions in the area, and most importantly, morphologically close location of bone tissue of the scapula to the maxilla, which ensures successful application of this flap for maxillary repair in patients with advanced cancer of the upper jaw.

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Marginal Fit Metal–Ceramic and In-Ceram Single Crown Cement retained in Implant-supported Abutments

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1965 ◽

2016 ◽

Vol 17 (12) ◽

pp. 969-972

Author(s):

Rudys Rodolfo de Jesus Tavarez ◽

Mateus R Tonetto ◽

EM Maia Filho ◽

Valdimar S Valente ◽

Carlos E Francischone ◽

...

Keyword(s):

Clinical Significance ◽

Zinc Phosphate ◽

Marginal Fit ◽

Single Crown ◽

Implant Abutments ◽

Metal Ceramic ◽

Before And After ◽

Ceramic Crowns ◽

Group 2 ◽

Group 1

ABSTRACT Introduction This study evaluated the cervical fit of cemented metal–ceramic and In-Ceram implant-supported crowns, before and after the cementing procedure. Materials and methods Twenty crowns cemented on implant abutments are divided into two groups (n = 10): Group 1 – cemented metal–ceramic crowns and group 2 – cemented In-Ceram crowns. The marginal adaptations before and after cementation were evaluated in a comparison microscope with an error of 1 μm. All crowns were cemented with zinc phosphate cement. Results The cervical misalignment of cemented crowns before cementation (52.65 ± 11.83 and 85.73 ± 14.06 μm) was lower than that after cementation (66.80 ± 15.86 and 89.36 ± 22.66 μm). Conclusion The cementing procedure interferes with the marginal fit of cemented crowns on implant abutments, with the prosthesis having better adaptation before cementation. Cemented metal–ceramic crowns exhibited better cervical adaptation than In-Ceram crowns cemented before and after the cementing procedure. Clinical significance The maintenance of gum health and the longevity of prosthetic restorations are closely related to the restoration's marginal integrity. How to cite this article Valente VS, Francischone CE, Vilarinho Soares de Moura CD, Francischone Júnior CE, Silva AM, Ribeiro IS, Maia Filho EM, Bandéca MC, Tonetto MR, de Jesus Tavarez RR. Marginal Fit Metal–Ceramic and In-Ceram Single Crown Cement retained in Implant-supported Abutments. J Contemp Dent Pract 2016;17(12):969-972.

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Evaluation of Oral Hygiene in Patients with Visual Disabilities

International Archives of Medicine ◽

10.3823/2457 ◽

2017 ◽

Vol 10 ◽

Author(s):

Roberto Carlos Mourão Pinho ◽

Leogenes Maia Santiago ◽

Renata Almeida ◽

Bruna Carvalho Vajgel ◽

Renata Cimões

Keyword(s):

Visual Impairment ◽

Oral Hygiene ◽

Dental Tissues ◽

Periodontal Tissues ◽

Significant Difference ◽

Before And After ◽

The Mean ◽

Group 2 ◽

Bacterial Plaque ◽

Group 1

Introduction: Patients with visual impairment present greater difficulty in achieving adequate oral hygiene due to restricted eyesight. Therefore, oral hygiene motivation and instruction methods should be adapted to these patients to understand the importance of bacterial plaque control, both for the health of dental tissues and periodontal tissues Objective: The objective of the present study was to compare the plaque index (PI) of patients with and without visual impairment before and after the institution of oral hygiene instructions through a Randomized Clinical Trial. Twenty patients with visual impairment (Group 1) from the Instituto dos Cegos and 20 without visual impairment (Group 2) from the ASCES Periodontia Clinic were selected. Data were collected through the IP of O'Leary and reevaluated every 21 days for four sessions. Results: in both groups, the mean of PI decreased with the time of evaluation, with a significant difference between the evaluations (p <0.001). Group 1 had a mean PI higher than group 2 only in the fourth evaluation, but there was no significant difference (p> 0.05). As for the mean of the PI assessments, group 2 presented a mean higher than group 1, but without significant difference (p> 0.05). Conclusion: The study therefore suggests that there is no difference in PI in patients with or without visual impairment, and that the guidelines stimulate and motivate an improvement in oral hygiene conditions.

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Relationship Between Smoking and Bleeding on Probing

Journal of Oral Implantology ◽

10.1563/aaid-joi-d-10-00061 ◽

2012 ◽

Vol 38 (5) ◽

pp. 581-586 ◽

Cited By ~ 9

Author(s):

João Gustavo Oliveira de Souza ◽

Marco Aurélio Bianchini ◽

Cimara Fortes Ferreira

Keyword(s):

Dental Implant ◽

Statistical Significance ◽

Bleeding On Probing ◽

Periodontal Tissues ◽

Group 4 ◽

Group 3 ◽

Group 2 ◽

Bacterial Plaque ◽

Periodontal Probing ◽

Group 1

The objective of this study was to assess and compare bone loss (BL) around the dental implant platform as well as the presence of bacterial plaque (PBP), bleeding on probing (BOP), and periodontal probing depths (PD) of teeth and dental implants of smokers and nonsmokers. Three hundred forty-seven teeth and 98 implants of 20 randomly selected patients were assessed (12 smokers and 8 nonsmokers). The specimens were divided into 4 groups according to the site probed. Group 1 included smoker implant sites, group 2 included smoker tooth sites, group 3 included nonsmoker implant sites, and group 4 included nonsmoker tooth sites. The presence/absence of visible bacterial plaque, presence/absence of BOP, PD ≤ 3 mm or >3 mm, and BL around the dental implant platform were the data assessed. The PBP and BL showed statistical significance between smokers and nonsmokers. Bleeding on probing and PD ≤ 3 mm showed statistical significance between groups 1, 3, and 4. Comparing sites with BOP and PD > 3 mm, there was no statistical significance except for group 1, which did not present sites with these characteristics. Comparing sites with BOP and PD ≤ 3 mm, there was statistical significance between group 2 and groups 3 and 4. When comparing the prevalence of sites without BOP and PD > 3 mm, there was statistical significance between groups 1, 3, and 4. Smoking promotes a greater BL around the dental implant platform and results in vasoconstriction of the peri-implant and periodontal tissues.

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In-vivo evaluation of the effect of cyanoacrylate on prosthetic vascular graft infection – does cyanoacrylate increase the severity of infection?

VASA ◽

10.1024/0301-1526/a000867 ◽

2020 ◽

Vol 49 (4) ◽

pp. 281-284

Author(s):

Atıf Yolgosteren ◽

Gencehan Kumtepe ◽

Melda Payaslioglu ◽

Cuneyt Ozakin

Keyword(s):

Vascular Graft ◽

Graft Infection ◽

Vascular Graft Infection ◽

Group 4 ◽

Significant Difference ◽

Group 3 ◽

Group 2 ◽

Prosthetic Vascular Graft Infection ◽

Group 1

Summary. Background: Prosthetic vascular graft infection (PVGI) is a complication with high mortality. Cyanoacrylate (CA) is an adhesive which has been used in a number of surgical procedures. In this in-vivo study, we aimed to evaluate the relationship between PVGI and CA. Materials and methods: Thirty-two rats were equally divided into four groups. Pouch was formed on back of rats until deep fascia. In group 1, vascular graft with polyethyleneterephthalate (PET) was placed into pouch. In group 2, MRSA strain with a density of 1 ml 0.5 MacFarland was injected into pouch. In group 3, 1 cm 2 vascular graft with PET piece was placed into pouch and MRSA strain with a density of 1 ml 0.5 MacFarland was injected. In group 4, 1 cm 2 vascular graft with PET piece impregnated with N-butyl cyanoacrylate-based adhesive was placed and MRSA strain with a density of 1 ml 0.5 MacFarland was injected. All rats were scarified in 96th hour, culture samples were taken where intervention was performed and were evaluated microbiologically. Bacteria reproducing in each group were numerically evaluated based on colony-forming unit (CFU/ml) and compared by taking their average. Results: MRSA reproduction of 0 CFU/ml in group 1, of 1410 CFU/ml in group 2, of 180 200 CFU/ml in group 3 and of 625 300 CFU/ml in group 4 was present. A statistically significant difference was present between group 1 and group 4 (p < 0.01), between group 2 and group 4 (p < 0.01), between group 3 and group 4 (p < 0.05). In terms of reproduction, no statistically significant difference was found in group 1, group 2, group 3 in themselves. Conclusions: We observed that the rate of infection increased in the cyanoacyrylate group where cyanoacrylate was used. We think that surgeon should be more careful in using CA in vascular surgery.

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The influence of continuous local wound infusion on postoperative pain in patients undergoing transfemoral amputation

VASA ◽

10.1024/0301-1526/a000457 ◽

2015 ◽

Vol 44 (5) ◽

pp. 381-386 ◽

Cited By ~ 1

Author(s):

Christian Uhl ◽

Thomas Betz ◽

Andrea Rupp ◽

Markus Steinbauer ◽

Ingolf Töpel

Keyword(s):

Pain Management ◽

Pilot Study ◽

Local Anaesthetic ◽

Phantom Pain ◽

Transfemoral Amputation ◽

Postoperative Wound ◽

Stump Pain ◽

Management Protocol ◽

Group 2 ◽

Group 1

Abstract. Summary: Background: This pilot study was set up to examine the effects of a continuous postoperative wound infusion system with a local anaesthetic on perioperative pain and the consumption of analgesics. Patients and methods: We included 42 patients in this prospective observational pilot study. Patients were divided into two groups. One group was treated in accordance with the WHO standard pain management protocol and in addition to that received a continuous local wound infusion treatment (Group 1). Group 2 was treated with analgesics in accordance with the WHO standard pain management protocol, exclusively. Results: The study demonstrated a significantly reduced postoperative VAS score for stump pain in Group 1 for the first 5 days. Furthermore, the intake of opiates was significantly reduced in Group 1 (day 1, Group 1: 42.1 vs. Group 2: 73.5, p = 0.010; day 2, Group 1: 27.7 vs. Group 2: 52.5, p = 0.012; day 3, Group 1: 23.9 vs. Group 2: 53.5, p = 0.002; day 4, Group 1: 15.7 vs. Group 2: 48.3, p = 0.003; day 5, Group 1 13.3 vs. Group 2: 49.9, p = 0.001). There were no significant differences between the two groups, neither in phantom pain intensity at discharge nor postoperative complications and death. Conclusions: Continuous postoperative wound infusion with a local anaesthetic in combination with a standard pain management protocol can reduce both stump pain and opiate intake in patients who have undergone transfemoral amputation. Phantom pain was not significantly affected.

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Abnormal Haemostasis and Blood Viscosity in Malignant Hypertension

Thrombosis and Haemostasis ◽

10.1055/s-0038-1661190 ◽

1984 ◽

Vol 52 (03) ◽

pp. 253-255 ◽

Cited By ~ 11

Author(s):

C Isles ◽

G D O Lowe ◽

B M Rankin ◽

C D Forbes ◽

N Lucie ◽

...

Keyword(s):

Blood Pressure ◽

Blood Viscosity ◽

Renal Damage ◽

Antithrombin Iii ◽

Plasma Viscosity ◽

Malignant Hypertension ◽

Fibrin Deposition ◽

Group 3 ◽

Group 2 ◽

Group 1

SummaryWe have previously shown abnormalities of haemostasis suggestive of intravascular coagulation in patients with malignant hypertension, a condition associated with retinopathy and renal fibrin deposition. To determine whether such abnormalities are specific to malignant hypertension, we have measured several haemostatic and haemorheological variables in 18 patients with malignant hypertension (Group 1), 18 matched healthy controls (Group 2), and 18 patients with non-malignant hypertension (Group 3) matched for renal pathology, blood pressure and serum creatinine with Group 1. Both Groups 1 and 3 had increased mean levels of fibrinogen, factor VIIIc, beta-thrombo- globulin, plasma viscosity and blood viscosity (corrected for haematocrit); and decreased mean levels of haematocrit, antithrombin III and platelet count. Mean levels of fast antiplasmin and alpha2-macroglobulin were elevated in Group 1 but not in Group 3. We conclude that most blood abnormalities are not specific to malignant hypertension; are also present in patients with non-malignant hypertension who have similar levels of blood pressure and renal damage; and might result from renal damage as well as promoting further renal damage by enhancing fibrin deposition. However increased levels of fibrinolytic inhibitors in malignant hypertension merit further investigation in relation to removal of renal fibrin.

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Total Knee Arthroplasty after Previous Ipsilateral Hip Arthroplasty Showed Lower Clinical Outcomes and Higher Leg Length Discrepancy Perception

The Journal of Knee Surgery ◽

10.1055/s-0040-1715447 ◽

2020 ◽

Author(s):

Han-Jun Lee ◽

Seong Hwan Kim ◽

Nicolas Pujol ◽

Yong-Beom Park

Keyword(s):

Clinical Outcomes ◽

Hip Arthroplasty ◽

Leg Length ◽

Function Score ◽

Patient’S Satisfaction ◽

Length Discrepancy ◽

Total Knee ◽

Group 2 ◽

Ks Function ◽

Group 1

AbstractThe purpose of this study is to compare perception of leg length discrepancy (LLD) and clinical results of total knee arthroplasties (TKA) in patients with or without previous ipsilateral hip arthroplasty. Between 2008 and 2015, navigation-assisted TKA was performed in 43 patients with previous hip arthroplasty after hip fracture. After 1:3 propensity score matching was performed, 108 patients of primary navigation-assisted TKA (group 1) and 36 patients with hip arthroplasty (group 2) were included. Knee Society (KS) scores, Western Ontario and McMaster Universities Index (WOMAC) scores, and patients' satisfaction including perception of LLD were evaluated. Radiographic evaluation included mechanical axis, component position, and LLD. Logistic regression analysis was performed to find the factors that affect the clinical outcomes. No significant differences in radiologic and clinical evaluations, except for KS function score, patient's satisfaction and LLD (p< 0.001), were detected between the groups. LLD and its perception were significantly higher in group 2 (1.8 ± 3.4 mm in group 1 and 9.7 ± 4.1 mm in group 2, p = 0.000). Risk factors for the low KS function score were found as LLD (odds ratio [OR]: 1.403, p = 0.008) and previous hip arthroplasty itself (OR: 15.755, p = 0.002), but much higher OR was found in previous hip arthroplasty. Although the outcomes of TKA in patients with ipsilateral hip arthroplasty are comparable to those of primary TKA, LLD was high and patient's satisfaction and functional outcomes were low in patients with previous ipsilateral hip arthroplasty. Care should be taken when considering TKA in patients with previous hip arthroplasty. This is a Level III, case control study.

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