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1.
Tzu Chi Med J ; 34(1): 82-87, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35233361

RESUMO

OBJECTIVES: The bone quantity and quality determine the prosthetic success outcome. This research was performed to evaluate the bone density for insertion of pterygoid implants in edentulous and dentulous participants with cone-beam computed tomography (CBCT). MATERIALS AND METHODS: CBCT evaluation was done for 66 dentate and edentulous patients for pterygoid implants at the pterygomaxillary region. The calculation of joint width, height, and volume of bone was done. Density of the bone was evaluated at the superior and inferior aspects of the pterygomaxillary column. RESULTS: It was observed that average pterygomaxillary joint height for dentulous (dentate) was -12.7 ± 7.2 mm, edentulous -12.4 ± 7.1 mm, the average pterygomaxillary joint width for dentulous was 8.15 ± 7.3 mm, and 8.13 ± 6.2 mm for edentulous. The average pterygomaxillary joint volume in dentulous participants was 279.4 ± 189.2 mm3 and for edentulous was 254.5 ± 176.4 mm3. There was expressively greater density of the bone in dentulous participants over edentulous participants (P < 0.05). CONCLUSION: There was better bone density found in dentate participants in comparison to edentulous participants. CBCT is a recent investigative device which measures pterygoid area efficiently. Pterygoid implants may be deliberated as an alternative method for resorbed (atrophic) maxilla.

2.
Ann Afr Med ; 20(3): 241-244, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34558456

RESUMO

Predictable esthetic root coverage has evolved into conventional treatment modalities making cosmetic procedures an integral part of periodontal treatment. The advent of second-generation platelet concentrates, i.e., platelet-rich fibrin (PRF), has broad clinical application in medical as well as dental field with its recent use for recession defects. The simplicity of PRF procurement and its low cost makes it most suitable for use in daily clinical practice. This particular case report foregrounds the benefit of PRF membrane along with coronally repositioned flap for mucogingival surgery on the labial surface of an upper anterior tooth.


Résumé La couverture radiculaire esthétique prévisible a évolué vers des modalités de traitement conventionnelles faisant des procédures cosmétiques une partie intégrante du parodontal traitement. L'avènement des concentrés plaquettaires de deuxième génération, c'est-à-dire la fibrine riche en plaquettes (PRF), a une large application clinique en médecine comme ainsi que le domaine dentaire avec son utilisation récente pour les défauts de récession. La simplicité de l'approvisionnement en PRF et son faible coût le rendent particulièrement adapté utilisation dans la pratique clinique quotidienne. Ce rapport de cas particulier met en avant les avantages de la membrane PRF avec le volet repositionné coronairement pour chirurgie mucogingivale sur la surface labiale d'une dent antérieure supérieure.


Assuntos
Fibrina/metabolismo , Retração Gengival/cirurgia , Fibrina Rica em Plaquetas , Plasma Rico em Plaquetas/fisiologia , Adulto , Feminino , Fibrina/administração & dosagem , Humanos , Membranas Artificiais , Retalhos Cirúrgicos , Resultado do Tratamento , Cicatrização
3.
Bioinformation ; 17(1): 289-294, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34393448

RESUMO

To assess the role of prefabricated SFI-Bar in peri-implant bone loss around immediately axially loaded and straight implants. This study comprised of 40 complete denture wearer patients who received two axially parallel implants connected by SFI-Bars in group I and two 15° mesially tilted implants connected by SFI-Bars in group II. Peri- implant bone loss (PiBL) was measured at 1 year, 2 years and 3 years. The mean PiBL at 1 year in group I was 0.21 mm and I group II was 0.22, at 2 years in group I was 0.26 mm and in group II was 0.23 mm and at 3 years, in group I was 0.29 mm and in group II was 0.34 mm. The difference was significant at 3 years (P< 0.05). The mean mesial PIBL at 1 year in group I was 0.18 mm, in group II was 0.20 mm, at 2 years in group I was 0.19 mm and in group II was 0.07 mm and at 3 years, in group I was 0.25 mm and in group II was 0.29 mm. The difference found to be significant in each time duration in both groups (P< 0.05).The mean distal PIBL at 1 year in group I was 0.23 mm, in group II was 0.22 mm, at 2 years in group I was 0.33 mm and in group II was 0.39 mm and at 3 years, in group I was 0.34 mm and in group II was 0.39 mm. The difference found to be significant at 2 and 3 years in both groups (P< 0.05). Authors found that mandibular overdentures retained with Prefabricated SFI-Bar with axial and straight inserted implants may be useful in patients with reduced bone height.

4.
J Pharm Bioallied Sci ; 13(Suppl 1): S432-S435, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34447127

RESUMO

AIM: The primary purpose of the study was to evaluate the levels of oxidative stress in plasma in patients with aggressive periodontitis (AgP) before and after full-mouth disinfection. MATERIALS AND METHODS: Twenty-five healthy controls and 25 participants with aggressive periodontal were assessed for plaque index, probing pocket depth, papillary bleeding index, and clinical attachment level. Periodontal bone support was assessed by taking full mouth periapical radiographs. Full-mouth disinfection of the patient was done within 24 h of clinical assessment of AgP. These parameters were assessed at the baseline and after 8 weeks of initial periodontal therapy. Plasma samples were taken and evaluated for various oxidative stress markers. RESULTS: Strong positive correlation was observed among periodontal parameters and levels of enzymatic/nonenzymatic biomarkers for oxidative stress (thiobarbituric acid-reactive substances [TBARS], glutathione peroxidase [GPX], and catalase [CAT]) (P < 0.05), before and after periodontal management. The patients with AgP had high levels of TBARS, GPX, and CAT levels in the plasma matched to the healthy individuals (P < 0.05). CONCLUSION: Enzymatic and nonenzymatic oxidative stress may have a role in the pathogenesis AP. Initial periodontal treatment can lead to the reduction of these stresses.

5.
J Pharm Bioallied Sci ; 12(Suppl 1): S619-S622, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33149531

RESUMO

BACKGROUND: Kids and teenagers are more prone to oral diseases. Poor oral health has a significant impact on oral well-being-associated quality of life. Thus, we performed an investigation to examine the outcome of oral health status on the quality of life of children and adolescents in Indian population, by using the Oral Health Impact Profile-14 (OHIP-14). MATERIALS AND METHODS: A total of 100 children, ranging between 1 and 19 years of age who attended Indian hospitals from November 2016 to October 2019, were included in the study. The DMFT Index (Decayed, Missing, and Filled Teeth) and OHIP-14 were used as data collection tools. Association of the total OHIP-14 score and seven subscales associated with it was evaluated using Spearman's correlations. RESULTS: The results showed statistically noteworthy association between the toothbrushing regularity, number of dental appointments, history of oral trauma, smoking, and subdomains of OHIP-14 (P < 0.05). CONCLUSION: Dental and oral health of an individual has a great impact on their quality of life.

6.
J Contemp Dent Pract ; 21(6): 683-685, 2020 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-33025939

RESUMO

AIM: The higher success rate (>90%) of dental implants over 5 years has made this treatment option favorable for dental surgeons as well as for patients. The present in vitro study was conducted to assess microleakage and microgap of two dissimilar internal implant-abutment associations. MATERIALS AND METHODS: Forty dental implants were divided into two groups: trilobe internal connection fixtures in group I and internal hexagonal geometry fixtures in group II. For the immersion of implant abutment assemblies, sterilized tubes containing 4 mL of Staphylococcus aureus broth culture were incubated at 37°C for 2 weeks. Gram's stain and biochemical reactions were used for identification of colonies. RESULTS: The mean log10 colony-forming unit (CFU) in group I was 8.6 and was 9.3 in group II. The disparity among two groups was found to be significant (p < 0.05). The mean microgap in group I was 7.2 µm and was 10.4 µm in group II. The disparity among the two groups was found to be significant (p < 0.05). CONCLUSION: Authors found that microscopic space between implant and abutment may be the site of penetration of bacteria. There was significant higher log10 CFU in dental implant fixtures with an internal hexagonal geometry compared to the dental implant fixtures with a trilobe internal connection. CLINICAL SIGNIFICANCE: Microscopic space between implant and abutment may be the site of penetration of bacteria. This information will help to avoid microleakage to improve implant success rate.


Assuntos
Dente Suporte , Implantes Dentários , Humanos , Staphylococcus aureus
7.
J Family Med Prim Care ; 9(4): 1834-1840, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32670927

RESUMO

Lymphomas constitute the third most common neoplasm in head and neck region arising from the lymphoreticular system. Malignant lymphomas are divided into Hodgkin's disease and non-Hodgkin's lymphoma (NHL). NHL comprises approximately 5% of head and neck malignancies and displays a wide range of appearances comparable with Hodgkin's disease. Hodgkin's and non-Hodgkin's lymphomas are seen in the head and neck region, but extranodal disease, with or without lymph node involvement, is more common among NHL patients. Extranodal involvement includes the areas such as Waldeyer's ring (i.e., the tonsils, pharynx, and base of the tongue), salivary glands, orbit, paranasal sinuses, and thyroid glands. There are several classification systems for categorizing NHL out of which WHO classification for lymphoid neoplasms is mostly followed. This review describes the pathogenesis of NHL and explains some of the important NHL (Marginal zone B-cell Lymphoma, follicular lymphoma, mantle cell lymphoma).

8.
J Family Med Prim Care ; 9(3): 1617-1619, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32509661

RESUMO

AIM: The present study was conducted to determine the prevalence rate of dental implants failure and risk factors affecting dental implant outcome. MATERIALS AND METHODS: The present retrospective study was conducted on 826 patients who received 1420 dental implants in both genders. Length of implant, diameter of implant, location of implant, and bone quality were recorded. Risk factors such as habit of smoking, history of diabetes, hypertension, etc., were recorded. RESULTS: In 516 males, 832 dental implants and in 310 females, 588 dental implants were placed. Maximum dental implant failure was seen with length <10 mm (16%), with diameter <3.75 mm, and with type IV bone (20.6%). The difference found to be significant (P < 0.05). Maximum dental implant failures were seen with smoking (37%) followed by hypertension (20.8%), diabetes (20.3%), and CVDs (18.7%). Healthy patients had the lowest failure rate (4.37%). CONCLUSION: Dental implant failure was high in type IV bone, dental implant with <3.75 mm diameter, dental implant with length <10.0 mm, and among smokers.

9.
J Family Med Prim Care ; 9(3): 1752-1756, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32509685

RESUMO

The interdisciplinary collaboration of periodontics and orthodontics has allowed teeth to be moved 2-3 times faster, reducing the time required for traditional orthodontic therapy considerably. Periodontally accelerated osteogenic orthodontics (PAOO), also known as Wilckodontics, is a combination of a selective decortication facilitated orthodontics and alveolar augmentation. With this technique, there is no dependence on the pre-existing alveolar volume. This case report describes the treatment of permanent mandibular molar protraction in a 14-year-old patient undergoing orthodontic therapy using PAOO with piezosurgery.

10.
J Family Med Prim Care ; 9(2): 883-885, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32318439

RESUMO

BACKGROUND AND AIMS: The present study was conducted to assess failure rate of dental implant in medically compromised patients. METHODS: This study comprised of 68 medically compromised patients of both genders who underwent dental implants 5 years ago (Group I). Equal number of healthy subjects was taken as control (Group II). Amount of bone loss around the implant over 1mm of bone loss in the first year and over 0.3 mm bone loss every subsequent year were considered as failures. RESULTS: The age group of 30-40 comprised of 25 patients in group I and 35 in group II, 40-50 years had 27 in group I and 23 in group II and 50-60 years had 16 in group I and 10 in group II. Medically compromised patients were diabetes (25) with 30 dental implants followed by osteoporosis (16) with 17 dental implants, hypothyroidism (12) with 14 dental implants, organ transplant (10) with 12 dental implants and CVD (5) with 7 dental implants. Chi- square test was applied which revealed significant difference in patients (P < 0.05). In group I, there were 18 (22.5%) and in group II, there were 4 (5.56%) dental implant failures. The difference with chi- square test found to be significant P < 0.05). CONCLUSION: Among medically compromised conditions, higher failure rate was found in diabetes.

11.
J Family Med Prim Care ; 9(1): 229-234, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32110595

RESUMO

BACKGROUND AND AIMS: Bone loss around dental implants is generally measured by monitoring changes in marginal bone level using radiographs. After the first year of implantation, an implant should have <0.2 mm annual loss of marginal bone level to satisfy the criteria of success. However, the success rate of dental implants depends on the amount of the crestal bone around the implants. The main aim of this study was to evaluate and compare the crestal bone loss around implants placed with particulate ß-Tricalcium Phosphate Bone Graft and platelet concentrates. METHODS: 50 individuals received hundred dental implants. Each individual received one dental implant in the edentulous site filled with ß-Tricalcium Phosphate Bone Graft along (ß-TCP) with Platelet- Rich Plasma (PRP) (Group A) and another in edentulous site filled only with ß-Tricalcium Phosphate Bone Graft (Group B) in the posterior edentulous region. All the 100 implants were prosthetically loaded after a healing period of three months. Crestal bone loss was measured on mesial, distal, buccal and lingual side of each implant using periapical radiographs 3 months, 6 months and 9 months after implant placement. RESULTS: The average crestal bone loss 9 months after the implants placement in Group A and Group B was 2.75 mm and 2.23 mm respectively, the value being statistically significant (P < 0.05). In both Group A and Group B, the average crestal bone loss was maximum on the lingual side followed by buccal, distal and mesial sides. CONCLUSION: ß-TCP is a promising biomaterial for clinical situations requiring bone augmentation. However, the addition of PRP results in decreased bone loss around the dental implants.

12.
J Family Med Prim Care ; 9(1): 239-242, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32110597

RESUMO

AIM: This study aimed to correlate periodontal pathogens in endodontic periodontal diseases. METHODOLOGY: This study was conducted on 40 patients of both genders. All the participants were obtained from department of endodontics and periodontology with history of endo-perio lesion in same teeth. Polymerase chain reaction was performed and correlation was established. RESULTS: This study included 18 males and 22 females. The mean age of male was 42.5 years and female was 41.3 years. Specimens of Tannerella forsythia were isolated from 94% endodontium and 92% periodontium, Porphyromonas gingivalis from 71% endodontium and 55% periodontium, Aggregatibacter actinomycetemcomitans from 12% endodontium and 58% periodontium. The difference was significant (P < 0.05). Bacteria in endodontic-periodontal infection confirmed statistically significant correlation between absolute quantitation of T. forsythia and P. gingivalis (r = 0.412, P < 0.05), P. gingivalis and A. actinomycetemcomitans (r = 0.524, P < 0.05), and T. forsythia and A. actinomycetemcomitans (r = 0.427, P < 0.05). CONCLUSION: There was correlation between targeted bacterial species levels from concurrent endodontic-periodontal diseases. Thus, it can be suggested that dentinal tubules may be the pathway for spread of bacteria.

13.
J Family Med Prim Care ; 9(1): 243-246, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32110598

RESUMO

AIMS: The present study was conducted to determine correlation between peri-implantitis and periodontitis in adjacent teeth. MATERIALS AND METHODS: The present study was conducted on 58 patients with 84 dental implants. They were divided into two groups, group I (50) was with peri-implantitis and group II (34) was without it. In all patients, probing depth (PD), gingival recession (GR), and clinical attachment loss (CAL) was calculated around implant, adjacent to implant and on contralateral side. Obtained data were statistically analyzed using statistical software IBM SPSS Statistics for Windows, Version 21.0. Armonk, NY: IBM Corp with one-way analysis of variance. RESULTS: Males were 30 with 52 dental implants and females were 28 with 32 dental implants. CAL was 5.82 ± 0.52 in group I and 3.62 ± 0.63 in group II (P = 0.001) around implants. PD was 4.28 ± 1.26 in group I and 2.20 ± 0.52 in group II around adjacent teeth (P = 0.002). PD around contralateral teeth was significant (P = 0.05) in group I (3.18 ± 1.01) and group II (2.71 ± 0.73). CONCLUSION: Periodontitis has negative effect on implant success. Teeth adjacent to dental implant plays an important role in deciding the success or failure of implant. Maintenance of periodontal health is of paramount importance for successful implant therapy.

14.
J Contemp Dent Pract ; 21(8): 880-883, 2020 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-33568609

RESUMO

AIM: To assess the survival rate of short dental implants in medically compromised patients. MATERIALS AND METHOD: This follow-up study was conducted on 342 medically compromised patients of both genders (580 dental implants). The failure rate of dental implants was assessed. RESULTS: There were 142 diabetes mellitus patients with 254 dental implants, 108 patients with hypertension with 190 dental implants, 26 patients with mental disabilities with 40 dental implants, 20 oral cancer patients with 36 dental implants, and 46 osteomyelitis subjects with 60 dental implants. There were 60 (10.5%) short dental implant (SDI) failures of which a maximum of 25 (22.7%) were seen with 4 mm diameter. Maximum failure was seen with osteomyelitis patients 8 (13.3%) followed by diabetes mellitus 32 (12.5%). Out of 270 dental implants in 130 control patients, implant failure was seen in 11 (4.07%). There was a significant (p < 0.05) bone loss on follow-up at 6 months, 1 year, and 2 years. CONCLUSION: Medically compromised patients are more prone to dental implant failure as compared to healthy subjects. CLINICAL SIGNIFICANCE: Since medically compromised patients are prone for implant failure, careful selection of cases is necessary.


Assuntos
Perda do Osso Alveolar , Implantes Dentários , Implantação Dentária Endo-Óssea , Planejamento de Prótese Dentária , Prótese Dentária Fixada por Implante , Falha de Restauração Dentária , Feminino , Seguimentos , Humanos , Masculino , Taxa de Sobrevida , Resultado do Tratamento
15.
Adv Biomed Res ; 9: 78, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33912494

RESUMO

BACKGROUND: Gestational diabetes mellitus (GDM) is one of the commonly occurring high-risk obstetric complications that accounts for 4%-9% of total pregnancies. The present study was an attempt to assess the effect of GDM on composition of the neonatal oral microbiota. MATERIALS AND METHODS: In this study, oral samples from 155 full-term vaginally delivered newborns were collected with sterile swabs. Seventy-five mothers diagnosed with GDM group and 80 were nondiabetic mothers (control). The oral microbiota was evaluated and analyzed by SPSS software. RESULTS: The mean gestational age in Group I was 38.1 weeks and in Group II was 39.6 weeks. Firmicutes was present in 38.1% in Group I versus 77.6% in Group II patients, Actinobacteria was seen in 15.2% in Group I and 7.4% in Group II, Bacteroidetes in 27.6% in Group I and 7.9% in Group II, Proteobacteria in 9.5% in Group I and 3.8% in Group II, and Tenericutes in 9.6% in Group I and 3.3% in Group II. There was a significant difference in major genera Prevotella, Bacteroidetes, Bifidobacterium, Corynebacterium, Ureaplasma, and Weissella in both groups (P < 0.05). CONCLUSION: There was increased bacterial microbiota in neonates born to mothers with GDM as compared to neonates born to nondiabetic mothers. Assessment of initial oral microbiota of neonates could help in assessing the early effect of GDM on neonatal oral microbial flora.

16.
J Contemp Dent Pract ; 21(11): 1245-1248, 2020 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-33850070

RESUMO

AIM AND OBJECTIVE: The aim of this study was to determine the stability of immediate-loaded single implants with periotest. MATERIALS AND METHODS: In this in vivo study, dental implants with a length ranging from 10 to 13 mm and diameter of 3.0-4.2 mm were utilized. Stability of dental implant was evaluated using the Periotest® M handheld device before loading, at 1 month, 3 months, 6 months, and 1 year. RESULTS: Implants 11.5 mm in length had the highest mean periotest value (0) after placement, whereas 10 mm-long implant had a value of -0.31 and 13 mm had a value of -0.48. After 1 month, 10 mm had a value of 1.23, 11.5 mm had a value of -0.32, and 13.0 mm had a value of -0.24. After 6 months, 10 mm had a value of 1.78, 11.5 mm had a value of -0.4, and 13.0 mm had a value of -0.41. After 1 year, 10 mm had a value of -0.54, 11.5 mm had a value of -0.51, and 13.0 mm had a value of -0.48. There was an unconstructive relationship between implant length and the average periotest score. There was also an unconstructive association between the implant diameter and the mean periotest value. CONCLUSION: The implant with long and greatest diameter had higher stability. Periotest can be used to determine dental implant stability. CLINICAL SIGNIFICANCE: Periotest is useful in determining dental implant stability. Large-scale studies may be helpful in obtaining useful results.


Assuntos
Implantes Dentários , Implantação Dentária Endo-Óssea , Osseointegração
17.
Contemp Clin Dent ; 11(4): 342-349, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33850400

RESUMO

BACKGROUND: Tumor necrosis factor-alpha (TNF-α), a " major inflammatory cytokine," not only plays an important role in periodontal destruction but also is extremely toxic to the host. Till date, there are not many studies comparing the levels of TNF-α in serum and its relationship to periodontal disease. AIM: Our study aimed to compare the serum TNF-α among the two study groups, namely, healthy controls and chronic periodontitis patients and establish a correlation between serum TNF-α and various clinical parameters. Hence, an attempt is made to estimate the level of TNF-α in serum, its relationship to periodontal disease and to explore the possibility of using the level of TNF-α in serum as a biochemical " marker" of periodontal disease. MATERIALS AND METHODS: Forty individuals participated in the study and were grouped into two subgroups. Group A - 20 systemically and periodontally healthy controls. Group B - twenty patients with generalized chronic periodontitis. The serum samples were assayed for TNF-α levels by enzyme-linked immunosorbent assay method. RESULTS: The mean serum TNF-α cytokines for Group B Generalized chronic periodontitis (GCP) was 2.977 ± 1.011, and Group A (healthy) was 0.867 ± 0.865. The range of serum TNF-α was from (0.867 to 2.977). Serum TNF-α cytokines had highly significant correlation with all clinical parameters (plaque index, probing pocket depth, clinical attachment loss, and gingival index) among all study participants (P = 0.001). CONCLUSION: These observations suggest a positive association between periodontal disease and increased levels of TNF-α in serum. It can be concluded that there is a prospect of using the estimation of TNF-α in serum as a "marker" of periodontal disease in future. However, it remains a possibility that the absence or low levels of TNF-α in serum might indicate a stable lesion and elevated levels might indicate an active site but only longitudinal studies taking into account, the disease "activity" and "inactivity" could suggest the possibility of using TNF-α in serum as an "Indicator" of periodontal disease.

18.
J Int Soc Prev Community Dent ; 9(5): 453-457, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31620377

RESUMO

Objectives: The successful endodontic therapy is judged by ability of tooth to withstand masticatory forces. The present study focused on comparing the strength of restorative materials, i.e., compomer, ormocer, nanocomposite, and ACTIVA Bioactive after conditioning in dietary solvents. Materials and Methods: This in vitro study consisted of 26 specimens of each restorative material Compomer (F2000 3M ESPE), Nanocomposite (Filtek Z350XT), Ormocer (Admira VOCO), and ACTIVA Bioactive (Pulpdent). The I-shear-punch test was conducted with the help of custom-designed shear-punch apparatus in Universal Testing Machine in different dietary solvents. Results were statistically analyzed using IBM SPSS Statistics for Windows, Version 20.0. (IBM Corp., Armonk, NY) and using Tukey's test and one-way analysis of variance test at P < 0.5. Results: Ormocer conditioned in heptanes had the highest mean shear-punch strength. ACTIVA Bioactive conditioned in distilled water showed the highest mean shear-punch strength. There was a significant difference in bond strength among all restorative materials (P < 0.05). Conclusion: Ormocer conditioned in heptane had significantly higher shear strength. ACTIVA Bioactive conditioned in distilled water had significantly increased shear strength. The nanofilled composite was significantly stronger than the Ormocer, ACTIVA Bioactive, and Compomer - a polyacid-modified composite.

19.
J Int Soc Prev Community Dent ; 9(1): 55-59, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30923694

RESUMO

Aims and Objective: Chemically modified and sandblasted acid-etched (SAE) mechanism leads to wettability of surfaces of dental implants which helps in osseointegration. The present study was conducted to determine the implant stability quotient (ISQ) of SAE and SAE chemically modified dental implants. Materials and Methods: The present study was conducted on 210 patients with 120 males and 90 females. Dental implants (Adin) with SAE (Group A) and SAE chemically modified (Group B) were inserted in patients. RFA was done immediately after implant insertion and after 1 week, 2 weeks, 6 weeks, 10 weeks, and 14 weeks. Results were statistically evaluated using SPSS Statistics for Windows, Version 21.0, IBM Corp., Armonk, NY, USA. Results: Maximum patients were in the age group of 25-35 years (males - 65, females - 48), followed by 35-45 years (males - 40, females - 32) and 45-55 years (males - 15, females - 10). Maximum dental implants were given in the right side (88) in males than females (56). On the left side, maximum implants were given in females (62) than males (56). Maximum RFA value of 86.2 and minimum value of 44.6 were observed in SAE dental implants (A). The maximum mean RFA value in chemically modified implants SAE (B) was 89.4 and minimum was 32.5. Conclusion: It was observed that surface treatment of dental implants shows higher implant-bone osseointegration. There is fastest osseointegration in implants with hydrophilic surfaces than those with SAE surfaces. ISQ was higher than 75 in both groups, which indicate higher implant stability.

20.
Contemp Clin Dent ; 9(Suppl 2): S278-S282, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30294158

RESUMO

Background: Dental implants are associated with failure such as early or late failure. Systemic conditions such as diabetes, hypertension, and bruxism affect the success rate. The present study was conducted to assess complications in dental implants in bruxism patients. Materials and Methods: This 5-year retrospective study was conducted on 450 patients (640 dental implants) who received implants during the period and followed up for 5 years from June 2010 to June 2016. Among these patients, 124 had bruxism habit. Dental radiographs or patients' recalled records were evaluated for the presence of complications such as fracture of implant, fracture of ceramic, screw loosening, screw fracture, and decementation of unit. Results: In 240 males and 210 females, 380 implants and 260 implants were inserted, respectively. The difference was statistically nonsignificant (P = 0.1). A total of 145 screw-type and 130 cemented-type fixations had complications. The difference was statistically nonsignificant (P = 0.5). Complications were seen in single crown (45), partial prostheses (125), and complete prostheses (105). The difference was statistically significant (P = 0.012). The common complication was fracture of ceramic (70) in cemented-type fixation and fracture of ceramic (85) in screw-type fixation. The difference was statistically significant (P = 0.01). Forty-two single crowns showed decementation, 85 partial prostheses had fracture of ceramic/porcelain, and 50 complete prostheses showed fracture of ceramic/porcelain. The failure rate was 42.9%. Survival rate of dental implants in males with bruxism habit was 90% after 1 year, 87% after 2 years, 85% after 3 years, 75% after 4 years, and 72% after 5 years. Survival rate of dental implants in females with bruxism habit was 92% after 1 year, 90% after 2 years, 85% after 3 years, 75% after 4 years, and 70% after 5 years. The difference among genders was statistically nonsignificant (P = 0.21). Conclusion: Bruxism is a parafunctional habit which affects the survival rate of dental implants. There is requirement to follow certain specific protocols in bruxism patients to prevent the developing complications.

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