Clinical bond failure rates of adhesive precoated self-ligating brackets using a self-etching primer

Mete Ozer; Mehmet Bayram; Cagri Dincyurek; Fuat Tokalak

doi:10.2319/022013-149.1

Clinical bond failure rates of adhesive precoated self-ligating brackets using a self-etching primer

The Angle Orthodontist ◽

10.2319/022013-149.1 ◽

2013 ◽

Vol 84 (1) ◽

pp. 155-160 ◽

Cited By ~ 4

Author(s):

Mete Ozer ◽

Mehmet Bayram ◽

Cagri Dincyurek ◽

Fuat Tokalak

Keyword(s):

Survival Rates ◽

Surface Preparation ◽

Failure Rates ◽

Bond Failure ◽

Kaplan Meier ◽

Adhesive Remnant Index ◽

Combined Use ◽

Significant Difference ◽

First Time

ABSTRACT Objective: To comparatively assess the failure rate of adhesive precoated (APC) self-ligating metal brackets bonded with two different enamel surface preparation techniques: self-etching primer (SEP) and conventional two-step etch and primer method (CM). Materials and Methods: Fifty-seven patients with complete permanent dentition were included in this study. A total of 1140 APC self-ligating brackets (3M Unitek, Monrovia, Calif) were bonded using a split-mouth design. For each patient, SEP (Transbond Plus SEP, 3M Unitek) and CM (37% phosphoric acid) were used in alternate quadrants. All brackets were bonded by the same investigator after pumicing and rinsing of all of the teeth. The number, site, and date of first-time bracket failures were monitored throughout orthodontic treatment (mean, 22 months). The survival rates of the brackets were estimated by Kaplan-Meier and log-rank tests (P < .05). The adhesive remnant index was used to determine the bond failure interface. Results: The bond failure rates were 2.97% and 2.18% for the CM and SEP, respectively. No statistically significant difference in failure rates was found between the groups. The bond failure sites were predominantly at the enamel-adhesive interface in both groups. Conclusion: This long-term in vivo study showed that the combined use of SEP and the APC bracket system can be used effectively for bonding brackets after pumicing the enamel surfaces in clinical orthodontics.

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Evaluation of Bond Failure Rate of Orthodontic Brackets Bonded with Green Gloo-Two Way Color Changes Adhesive: A Clinical Study

Ethiopian Journal of Health Sciences ◽

10.4314/ejhs.v29i2.5 ◽

1970 ◽

Vol 29 (2) ◽

Author(s):

Zuber Ahamed Naqvi ◽

Saleem Shaikh ◽

Zameer Pasha

Keyword(s):

Failure Rate ◽

Sampling Technique ◽

Orthodontic Brackets ◽

Rank Test ◽

Dental Arch ◽

Failure Rates ◽

Bond Failure ◽

Color Changes ◽

Kaplan Meier ◽

Significant Difference

BACKGROUND: Bonding is an important step in fixed orthodontic mechanotherapy. Many new materials introduced an adhesive for bonding. This study was designed to evaluate the clinical bond failure rate of orthodontic brackets bonded with green glue: two way color changes adhesive and transbond XT adhesive paste.METHODS: Eighteen male patients with a mean age of 16 years were included in the study. Convenience sampling technique was used to select the sample for this study. The split-mouth design was used to bond 360 brackets by one operator and both adhesives were used in each patient. Bond failure rates were estimated with respect to bonding procedure, dental arch, tooth type (incisor, canine, and premolar). The results were evaluated using the chisquare test. Kaplan – Meier analysis and the log rank test were used to estimate the survival rate of the brackets. Bracket failure rates for each system were analyzed, and failure causes as reported by the patients and the quadrant of each tooth in which bracketsfailed were recorded.RESULTS: The bond failure rate was 5.00% and 4.44% for green gloo and transbond XT group. No significant difference was found in the bond failure rate between transbond XT and Green gloo group. No significant difference was found in the bond failure rate between the two groups, in relation to right and left side and the type of teeth.CONCLUSION: Green gloo adhesive can be effectively used to bond orthodontic brackets.

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Tooth Whitening Effects on Bracket Bond Strength In Vivo

The Angle Orthodontist ◽

10.2319/042308-226.1 ◽

2009 ◽

Vol 79 (4) ◽

pp. 777-783 ◽

Cited By ~ 17

Author(s):

Joseph M. Mullins ◽

Elizabeth C. Kao ◽

Chris A. Martin ◽

Erdogan Gunel ◽

Peter Ngan

Keyword(s):

Hydrogen Peroxide ◽

Survival Rate ◽

Rank Test ◽

Tooth Whitening ◽

Bond Failure ◽

Kaplan Meier ◽

Adhesive Remnant Index ◽

History Of ◽

Bracket Failure

Abstract Objective: To test the hypothesis that there is no difference between the bracket survival rate of brackets bonded to bleached and unbleached teeth. Materials and Methods: Thirty-eight patients who required comprehensive orthodontic treatment were included in the study. A split mouth technique was used with one arch exposed to in-office whitening gel containing 38% hydrogen peroxide for 30 minutes, while the unbleached arch served as the control. Patients were divided into two groups: Brackets bonded within 24 hours after bleaching and brackets bonded 2–3 weeks after bleaching. The bracket survival rate was computed using the log-rank test (Kaplan-Meier Analysis). Results: A significantly higher rate of bracket failure was found with bleached teeth (16.6%) compared with unbleached teeth (1.8%) after 180 days. Brackets bonded within 24 hours of bleaching resulted in significantly higher clinical failure (14.5%) compared with those bonded after 3 weeks (2.1%). Adhesive Remnant Index scores of failed brackets revealed that the majority of failure in bleached teeth occurred in the enamel/resin interface. Conclusions: The hypothesis was rejected. Brackets bonded within 24 hours after bleaching have a significantly higher risk for bond failure. Orthodontic bonding should be delayed for 2–3 weeks if patients have a history of in-office bleaching with 38% hydrogen peroxide.

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12-Month Self-Ligating Bracket Failure Rate with a Self-Etching Primer

The Angle Orthodontist ◽

10.2319/112507-552.1 ◽

2008 ◽

Vol 78 (6) ◽

pp. 1095-1100 ◽

Cited By ~ 21

Author(s):

Selma Elekdag-Turk ◽

Fethiye Cakmak ◽

Devrim Isci ◽

Tamer Turk

Keyword(s):

Survival Rate ◽

Clinical Performance ◽

Survival Rates ◽

Rank Test ◽

Dental Arch ◽

Bond Failure ◽

Lower Survival Rate ◽

Log Rank Test ◽

Kaplan Meier ◽

Significant Difference

Abstract Objective: To compare the clinical performance of a self-etching primer (SEP) with a conventional two-step etch and primer method (CM). Materials and Methods: Study subjects were 39 patients with a mean age of 15 years 7 months. Six hundred and eighty-eight brackets were bonded by one operator with a split-mouth design, using Transbond Plus Self-Etching Primer or a conventional two-step etch and primer (Transbond XT). The survival rate of the brackets was estimated by the Kaplan-Meier analysis. Bracket survival distributions with respect to bonding procedure, dental arch, type of tooth (incisor, canine, and premolar) and patients' gender were compared using the log-rank test. Bond failure interface was determined using the Adhesive Remnant Index (ARI). Results: The bond failure rates of SEP and CM were 4.7% and 1.7%, respectively. A significant difference was found between the bonding procedures using the log-rank test (P < .05). Furthermore, canine and premolar teeth displayed a lower survival rate than incisor teeth (P < .05). Survival rates did not show significant differences between the upper and lower dental arches and patients' gender (P > .05). No significant difference was observed for ARI scores (P > .05). Conclusion: These findings indicate that the SEP (Transbond Plus) can be effectively used to bond orthodontic brackets.

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Six-month bracket failure rate with a flowable composite: A split-mouth randomized controlled trial

Dental Press Journal of Orthodontics ◽

10.1590/2177-6709.22.2.069-076.oar ◽

2017 ◽

Vol 22 (2) ◽

pp. 69-76 ◽

Cited By ~ 5

Author(s):

Sindhuja Krishnan ◽

Saravana Pandian ◽

R. Rajagopal

Keyword(s):

Randomized Controlled Trial ◽

Failure Rate ◽

Controlled Trial ◽

Survival Rates ◽

Failure Rates ◽

Bond Failure ◽

Flowable Composite ◽

Randomized Controlled ◽

Significant Difference ◽

Orthodontic Bonding

ABSTRACT INTRODUCTION: The use of flowable composites as an orthodontic bonding adhesive merits great attention because of their adequate bond strength, ease of clinical handling and reduced number of steps in bonding. OBJECTIVE: The aim of this Randomized Controlled Trial was to comparatively evaluate over a 6-month period the bond failure rate of a flowable composite (Heliosit Orthodontic, Ivoclar Vivadent AG, Schaan) and a conventional orthodontic bonding adhesive (Transbond XT, 3M Unitek). METHODS: 53 consecutive patients (23 males and 30 females) who fulfilled the inclusion and exclusion criteria were included in the study. A total of 891 brackets were analyzed, where 444 brackets were bonded using Heliosit Orthodontic and 447 brackets were bonded using Transbond XT. The survival rates of brackets were estimated with the Kaplan-Meier analysis. Bracket survival distributions for bonding adhesives, tooth location and dental arch were compared with the log-rank test. RESULTS: The failure rates of the Transbond XT and the Heliosit Orthodontic groups were 8.1% and 6% respectively. No significant differences in the survival rates were observed between them (p= 0.242). There was no statistically significant difference in the bond failure rates when the clinical performance of the maxillary versus the mandibular arches and the anterior versus the posterior segments were compared. CONCLUSIONS: Both systems had clinically acceptable bond failure rates and are adequate for orthodontic bonding needs.

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Clinical Evaluation of Bracket Bonding Using Two Different Polymerization Sources

The Angle Orthodontist ◽

10.2319/072807-351.1 ◽

2008 ◽

Vol 78 (5) ◽

pp. 922-925 ◽

Cited By ~ 12

Author(s):

Nikolaos S. Koupis ◽

Theodore Eliades ◽

Athanasios E. Athanasiou

Keyword(s):

Failure Rate ◽

Orthodontic Treatment ◽

Light Emitting Diode ◽

Rank Test ◽

Dental Arch ◽

Halogen Lamp ◽

Failure Rates ◽

Bond Failure ◽

Significant Difference ◽

The Right

Abstract Objective: To comparatively assess clinical failure rate of brackets cured with two different photopolymerization sources after nine months of orthodontic treatment. Materials and Methods: The sample of this study comprised 30 patients who received comprehensive orthodontic treatment by means of fixed appliances. Using the same adhesive, 600 stainless steel brackets were directly bonded and light cured for 10 seconds with the light-emitting diode (LED) lamp or for 20 seconds with the conventional halogen lamp. A split-mouth design randomly alternated from patient to patient was applied. Failure rates were recorded for nine months and analyzed with Pearson χ2 test, and log-rank test at α = .05 level of significance. Results: The overall failure rate recorded with the halogen unit (3.33%) was not significantly different from the failure rate for the LED lamp (5.00%). Significantly more failures were found in boys compared with girls, in the mandibular dental arch compared with the maxillary arch, and in posterior segments compared with anterior segments. However, no significant difference was found between the right and left segments. Conclusion: Both light-curing units showed sufficiently low bond failure rates. LED curing units are an advantageous alternative to conventional halogen sources in orthodontics because they enable a reduced chair-time bonding procedure without significantly affecting bond failure rate.

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Clinical evaluation of the failure rate of metallic brackets bonded with orthodontic composites

Brazilian Dental Journal ◽

10.1590/s0103-64402012000400015 ◽

2012 ◽

Vol 23 (4) ◽

pp. 399-402 ◽

Cited By ~ 5

Author(s):

Fábio Lourenço Romano ◽

Rodrigo Alexandre Valério ◽

Jaciara Miranda Gomes-Silva ◽

José Tarcísio Lima Ferreira ◽

Gisele Faria ◽

...

Keyword(s):

Failure Rate ◽

Orthodontic Treatment ◽

Color Change ◽

Rank Test ◽

Initial Alignment ◽

Bond Failure ◽

Log Rank Test ◽

Significant Difference ◽

Mandibular Teeth

The purpose of the present study was to evaluate in vivo the failure rate of metallic brackets bonded with two orthodontic composites. Nineteen patients with ages ranging from 10.5 to 38.7 years needing corrective orthodontic treatment were selected for study. The enamel surfaces from second premolars to second premolars were treated with Transbond Plus-Self Etching Primer (3M Unitek). Next, 380 orthodontic brackets were bonded on maxillary and mandibular teeth, as follows: 190 with Transbond XT composite (3M Unitek) (control) and 190 with Transbond Plus Color Change (3M Unitek) (experimental) in contralateral quadrants. The bonded brackets were light cured for 40 s, and initial alignment archwires were inserted. Bond failure rates were recorded over a six-month period. At the end of the evaluation, six bond failures occurred, three for each composite. Kaplan-Meyer method and log-rank test (Mantel-Cox) was used for statistical analysis, and no statistically significant difference was found between the materials (p=0.999). Both Transbond XT and Transbond Plus Color Change composites had low debonding rates over the study period.

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The prognosis of hepatoid adenocarcinoma of the stomach: a propensity score-based analysis

10.21203/rs.3.rs-19206/v2 ◽

2020 ◽

Author(s):

Kai Zhou ◽

Anqiang Wang ◽

Sheng Ao ◽

Jiahui Chen ◽

Ke Ji ◽

...

Keyword(s):

Propensity Score ◽

Cox Regression ◽

Radical Surgery ◽

Survival Rates ◽

Cancer Type ◽

Radical Gastrectomy ◽

Hepatoid Adenocarcinoma ◽

Kaplan Meier ◽

Significant Difference ◽

Propensity Matching

Abstract Background : To investigate whether there is a distinct difference in prognosis between hepatoid adenocarcinoma of the stomach ( HAS) and non-hepatoid adenocarcinoma of the stomach (non-HAS) and whether HAS can benefit from radical surgery. Methods : We retrospectively reviewed 722 patients with non-HAS and 75 patients with HAS who underwent radical gastrectomy between 3 November 2009 and 17 December 2018. Propensity score matching (PSM) analysis was used to eliminate the bias among the patients in our study. The relationships between gastric cancer type and overall survival (OS) were evaluated by the Kaplan-Meier method and Cox regression. Results : Our data demonstrate that there was no statistically significant difference in the OS between HAS and non-HAS {K-M, P=log rank (Mantel-Cox), (before PSM P=0.397); (1:1 PSM P=0.345); (1:2 PSM P=0.195)}. Moreover, there were no significant differences in the 1-, 2-, or 3-year survival rates between patients with non-HAS and patients with HAS (before propensity matching, after 1:1 propensity matching, and after 1:2 propensity matching). Conclusion : HAS was generally considered to be an aggressive gastric neoplasm, but its prognosis may not be as unsatisfactory as previously believed.

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Predictive Value of Charlson Comorbidity Index and Cofactors on 2-Year Mortality in Older Patients With Intertrochanteric Fractures: A Retrospective Analysis

10.21203/rs.3.rs-136253/v1 ◽

2021 ◽

Author(s):

Jianda Xu ◽

Homma Yasuhiro ◽

Yuta Jinnai ◽

Tomonori Baba ◽

Zhuang Xu ◽

...

Keyword(s):

Blood Loss ◽

Older Patients ◽

Demographic Data ◽

Survival Rates ◽

Operation Time ◽

Intertrochanteric Fractures ◽

Time Out ◽

Time Operation ◽

Significant Difference ◽

First Time

Abstract The aim of this study was to evaluate the role of Charlson comorbidities index (CCI) and cofactors on 2-year mortality in older patients with intertrochanteric fractures. 60 cases with unilateral intertrochanteric fracture were retrospectively analyzed and divided into Low-CCI group (CCI: 1-4) or high-CCI groups (CCI: 5-6). All the patients’ electronic hospital records were reviewed. The preoperative situations (demographic data, comorbidities and fracture conditions), perioperative situations (wait time, operation time, implant choice, blood loss, transfusion or not) and postoperative situations (complications, first time out of bed, function about 1-/2- week and 2-year mortality) were recorded. 51.67% were in low-CCI group and 48.33% in high-CCI group. The survival rates in low- and high-CCI group were 93.5% and 86.2 % respectively. According to the functional results of 1- or 2- week after operation, no significant difference was found (P=0.955, 0.140). Log-rank analysis showed that the main prognostic factors were blood loss, first time out of bed and complication (P<0.05). Multivariate analysis confirmed that complication and first time out of bed were significant factor on survival rate (P=0.029, 0.010). Charlson comorbidities index maybe not the indicator of 2-year mortality in older patients with intertrochanteric fractures. In order to improve the prognosis, more attentions should be paid to reduce the complications and encourage postoperative earlier excise out of bed.

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Comparison of Survival Rates of Stainless-Steel Crowns Placed with and without Pulpotomy: A Two-Year Retrospective Study

International Journal of Dentistry ◽

10.1155/2020/8883189 ◽

2020 ◽

Vol 2020 ◽

pp. 1-6

Author(s):

Fatmah N. AlMotawah ◽

Sharat Chandra Pani ◽

Tala AlKharashi ◽

Saleh AlKhalaf ◽

Mohammed AlKhathlan ◽

...

Keyword(s):

Stainless Steel ◽

General Anesthesia ◽

Survival Rates ◽

Survival Outcome ◽

Survival Outcomes ◽

Proximal Caries ◽

Kaplan Meier ◽

Significant Difference ◽

Chi Squared

Aim. This study aimed to retrospectively compare the survival outcomes over two years between teeth with proximal dental caries that were restored with stainless-steel crowns to those that were pulpotomized and then restored with a stainless-steel crown in patients who were rehabilitated under general anesthesia. Participants and Methods. The records of 131 patients aged between two to six years who had stainless-steel crowns placed under general anesthesia and had two-year follow-up were screened. 340 teeth with moderate proximal caries on the radiograph (D2) were included in the study. Of these, 164 teeth were treated with a pulpotomy and stainless-steel crown, while 176 teeth were crowned without a pulpotomy. The type of each tooth was compared using the Chi-squared test and Kaplan–Meier survival analysis, and curves were plotted based on the two-year outcomes. Results. Treatment: the sample comprised 59 males (mean age 4.73 years, SD ± 1.4 years) and 72 females (mean age 5.2 years, SD ± 2.0 years). The Kaplan–Meier regression model showed no significant difference in survival outcomes between teeth that had been pulpotomized and those that had not ( p = 0.283). Conclusion. Within the limitations of the current study, we can conclude that performing a pulpotomy does not influence the survival outcome of mild/moderate proximal caries restored with stainless-steel crowns under general anesthesia.

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