Comparison between Early Loaded Single Implants with Internal Conical Connection or Implants with Transmucosal Neck Design: A Non-Randomized Controlled Trial with 1-Year Clinical, Aesthetics, and Radiographic Evaluation

To evaluate the implant and prosthetic of two implants with different surfaces and neck design. Enrolled patients received bone level, 12° conical connection implants (Nobel Parallel, Nobel Biocare; NOBEL group) with anodized surface (TiUnite) and roughness of 1.35 μm, or transmucosal implant system (Prama, Sweden and Martina; PRAMA group) with convergent collar, ZIrTi surface, and roughness 1.4–1.7 μm. Both implants were made of pure grade IV titanium, with similar diameter and length, chosen according to the dentistry department availability and patient’s request. After early prosthesis delivery, patients were filled for at least one year. Outcome measures were: implant and prosthetic survival and success rates, physiological marginal bone remodeling, periodontal parameters and pink esthetic score (PES). Results: Fifteen patients were allocated and treated in each group. At the one-year follow-up, three patients dropped out, one in the NOBEL group and two in the PRAMA group. During the entire time of investigation, all implants survived and the prostheses were successful. No statistically significant differences were found in term of marginal bone loss, periodontal parameters, and aesthetics (p > 0.05). Conclusion: With the limitations of the present study, both implant systems showed successful clinical results. Finally, many other clinical and surgical variables may influenced marginal bone levels, implant survival, and periodontal parameters. More homogenous clinical trials with larger samples are needed to confirm these preliminary conclusions.

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Factors Affecting Implant Failure and Marginal Bone Loss of Implants Placed by Post-Graduate Students: A 1-Year Prospective Cohort Study

Materials ◽

10.3390/ma13204511 ◽

2020 ◽

Vol 13 (20) ◽

pp. 4511

Author(s):

Gian Maria Ragucci ◽

Maria Giralt-Hernando ◽

Irene Méndez-Manjón ◽

Oriol Cantó-Navés ◽

Federico Hernández-Alfaro

Keyword(s):

Graduate Students ◽

Dental Implants ◽

Implant Failure ◽

Success Rates ◽

Contributing Factors ◽

Marginal Bone Loss ◽

Post Graduate ◽

One Year ◽

The One

Statement of the problem: Most of the clinical documentation of implant success and survival published in the literature have been issued by either experienced teams from university settings involving strict patient selection criteria or from seasoned private practitioners. By contrast, studies focusing on implants placed and rehabilitated by inexperienced post-graduate students are scarce. Purpose: To record failure rates and identify the contributing factors to implant failure and marginal bone loss (MBL) of implants placed and rehabilitated by inexperienced post-graduate students at the one-year follow-up. Material and Methods: A prospective cohort study was conducted on study participants scheduled for implant therapy at the International University of Catalonia. An experienced mentor determined the treatment plan in accordance with the need of each participant who signed an informed consent. All surgeries and prosthetic rehabilitation were performed by the post-graduate students. Implant failure rate, contributors to implant failure, and MBL were investigated among 24 variables related to patient health, local site, and implant and prosthetic characteristics. The risk of implant failure was analyzed with a simple binary logistic regression model with generalized equation equations (GEE) models, obtaining unadjusted odds ratios (OR). The relationship between MBL and the other independent variables was studied by simple linear regression estimated with GEE models and the Wald chi2 test. Results: One hundred and thirty dental implants have been placed and rehabilitated by post-graduate students. Five implants failed before loading and none after restoration delivery; survival and success rates were 96.15% and 94.62%, respectively. None of the investigated variables significantly affected the implant survival rate. At the one-year follow-up, the mean (SD) MBL was 0.53 (0.39) mm. The following independent variables significantly affected the MBL: Diabetes, implant depth placement. The width of keratinized tissue (KT) and probing depth (PD) above 3 mm were found to be good indicators of MBL, with each additional mm of probing depth resulting in 0.11 mm more MBL. Conclusion: The survival and success rates of dental implants placed and rehabilitated by inexperienced post-graduate students at the one-year follow-up were high. No contributing factor was identified regarding implant failure. However, several factors significantly affected MBL: Diabetes, implant depth placement, PD, and width of KT. Clinical Implications: Survival and success rates of dental implants placed and rehabilitated by inexperienced post-graduate students were high at the one-year follow-up, similar to experienced practitioners. No contributing factors were identified regarding implant failure; however, several factors significantly affected MBL: Diabetes, implant depth placement, PD, and KM.

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1-Year Evaluation of OT Bridge Abutments for Immediately Loaded Maxillary Fixed Restorations: A Multicenter Study

European Journal of Dentistry ◽

10.1055/s-0040-1716632 ◽

2021 ◽

Author(s):

Rosario Acampora ◽

Marco Montanari ◽

Roberto Scrascia ◽

Emiliano Ferrari ◽

Massimo Pasi ◽

...

Keyword(s):

Survival Rates ◽

Health Impact ◽

P Value ◽

Success Rates ◽

Marginal Bone Loss ◽

Bridge Abutments ◽

Bleeding On Probing ◽

Fixed Dental Prosthesis ◽

Low Profile ◽

One Year

Abstract Objective Preliminary data on survival and success rates of immediately loaded, maxillary, screw-retained, implant-supported, fixed restorations delivered on narrow and low-profile OT Equator abutments (OT Bridge, Rhein’83) were evaluated. Materials and Methods This retrospective study evaluated data collected from patients rehabilitated with OT Bridge prosthetic concept between November 2017 and February 2019 in six different centers. Outcome measures were implant and prosthetic survival rates, biological and technical complications, marginal bone loss (MBL), oral health impact profile (OHIP), bleeding on probing, and plaque index. Results A total of 76 implants were inserted in 14 patients. Patients were followed for a mean period of 15.8 months (range = 12–24). All the patients receive OT Equator (Rhein'83) as intermediate abutments. One year after loading, one implant failed (1.3%). None of the prosthesis failed. One prosthetic complication was experienced in one patient. Three out of 76 implants were connected to the prosthetic framework using only the Seeger system, without screw. Difference in OHIP values was statistically significant (71.9 ± 8.5; p = 0.000). One year after loading, MBL was 0.21 ± 0.11 mm and p-value was 0.000. One year after loading, 8.7% of the examined implant sites present positive bleeding on probing, while 6.4% of the implant sites presented plaque. Conclusion The OT Equator abutments (Rhein'83) showed successful results when used to support maxillary fixed dental prosthesis delivered on four to six implants. High implant and prosthetic survival rates, very low complications, high patient satisfaction, and good biological parameters, including only 0.2 mm of bone remodeling were experienced one year after function. Further studies are needed to confirm these preliminary results.

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Clinical and Radiographic Evaluation of Short Implants Placed in the Posterior Mandible: A 1-Year Pilot Split-Mouth Study

Journal of Oral Implantology ◽

10.1563/aaid-joi-d-18-00037 ◽

2018 ◽

Vol 44 (4) ◽

pp. 250-259 ◽

Cited By ~ 2

Author(s):

Mireia Haro Adánez ◽

Miha Brezavšček ◽

Kirstin Vach ◽

Manrique Fonseca ◽

Wael Att

Keyword(s):

Survival Rate ◽

Treatment Time ◽

Survival Rates ◽

Prolonged Treatment ◽

Radiographic Evaluation ◽

Success Rates ◽

Marginal Bone Loss ◽

Probing Depth ◽

Short Implants ◽

Bone Gain

In many cases, due to anatomical limitations, the placement of regular-length implants cannot be facilitated without the performance of advanced surgical procedures. However, these are associated with morbidity, prolonged treatment time, and costs. To overcome such disadvantages, short implants were introduced. The aim of this prospective pilot split-mouth study was to compare the clinical outcome between short implants (7 mm) and regular-length (≥10 mm) implants placed in the posterior mandible after 1 year of prosthetic delivery. Ten patients received 4 implants in the posterior mandible. Two short implants were placed in one side and 2 regular-length implants were placed contralaterally. These were restored by means of splinted screw-retained metal-ceramic crowns. Marginal bone loss (MBL) and soft-tissue parameters were compared. No implant failed. Both types of implants showed success rates of 90% and survival rates of 100%. From prosthetic delivery to 1 year post-loading a bone gain of +0.29 mm for short implants and +0.19 mm for regular-length implants was present without showing any statistically significant differences in MBL between the 2 implant types (P > .05). Bleeding on probing, clinical attachment level, probing depth, and crown-to-implant ratio did not show any statistically significant differences between the 2 implant lengths (P > .05). One case of chipping occurred in the regular-length implant group, leading to a prosthetic survival rate of 95%. Short implants showed a prosthetic survival rate of 100%. After 1 year, short implants showed comparable clinical outcomes to that of regular-length implants, making them a viable treatment option in the posterior mandible.

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Chronic low back pain: Physical training, graded activity with problem solving training, or both? The one-year post-treatment results of a randomized controlled trial

Pain ◽

10.1016/j.pain.2007.04.021 ◽

2008 ◽

Vol 134 (3) ◽

pp. 263-276 ◽

Cited By ~ 72

Author(s):

Rob J.E.M. Smeets ◽

Johan W.S. Vlaeyen ◽

Alita Hidding ◽

Arnold D.M. Kester ◽

Geert J.M.G. van der Heijden ◽

...

Keyword(s):

Randomized Controlled Trial ◽

Low Back Pain ◽

Back Pain ◽

Controlled Trial ◽

Low Back ◽

Treatment Results ◽

Randomized Controlled ◽

Graded Activity ◽

One Year ◽

The One

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Evaluation of the Success Criteria for Zirconia Dental Implants: A Four-Year Clinical and Radiological Study

International Journal of Dentistry ◽

10.1155/2013/463073 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 32

Author(s):

Andrea Enrico Borgonovo ◽

Rachele Censi ◽

Virna Vavassori ◽

Marcello Dolci ◽

Josè Luis Calvo-Guirado ◽

...

Keyword(s):

Radiographic Evaluation ◽

First Year ◽

Success Rates ◽

Marginal Bone Loss ◽

Implant Placement ◽

Bone Preservation ◽

Bone Level ◽

Marginal Bone Level ◽

The Mean ◽

Zirconia Implants

Objectives. The aim was to evaluate survival and success rates, soft tissue health, and radiographic marginal bone loss (MBL) of zirconia implants placed in the esthetic and posterior areas of the jaws and in association with multiple or single implant restorations after at least 6 months of definitive restoration.Material and Methods. 35 one-piece zirconium implants were utilized for single or partially edentulous ridges rehabilitation. All implants received immediate temporary restorations and six months after surgery were definitively restored. Every 6 months after implant placement, a clinical-radiographic evaluation was performed. For each radiograph, the measurements of MBL were calculated.Results. The results showed that the mean MBL at 48-month followup was 1.631 mm. The mean MBL during the first year of loading was not more significant for implants placed in the first molar regions than for those positioned in other areas. Moreover, no differences in marginal bone level changes were revealed for multiple and single implants, whereas MBL in the first year was observed to be slightly greater for implants placed in the maxilla than for those placed in the mandible.Conclusion. Zirconia showed a good marginal bone preservation that could be correlated with one-piece morphology and characteristics of zirconia implants.

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Acupuncture for Frequent Migraine: A Randomized, Patient/Assessor Blinded, Controlled Trial with One-Year Follow-Up

Evidence-based Complementary and Alternative Medicine ◽

10.1155/2015/920353 ◽

2015 ◽

Vol 2015 ◽

pp. 1-14 ◽

Cited By ~ 6

Author(s):

Yanyi Wang ◽

Charlie Changli Xue ◽

Robert Helme ◽

Cliff Da Costa ◽

Zhen Zheng

Keyword(s):

Controlled Trial ◽

Sham Acupuncture ◽

Manual Acupuncture ◽

Pain Thresholds ◽

Pressure Pain ◽

Pressure Pain Thresholds ◽

One Year ◽

The One

Objectives. This study aimed to evaluate the efficacy and safety of manual acupuncture as a prophylaxis for frequent migraine.Methods. Fifty frequent migraineurs were randomly allocated to receive 16 sessions of either real acupuncture (RA = 26) or sham acupuncture (SA = 24) during 20 weeks. The primary outcomes were days with migraine over four weeks, duration, and intensity of migraine and the number of responders with more than 50% reduction of migraine days. The secondary outcomes were the relief medication, quality of migraine, quality of life, and pressure pain thresholds.Results. The two groups were comparable at baseline. At the end of the treatment, when compared with the SA group, the RA group reported significant less migraine days (RA: 5.2 ± 5.0; SA: 10.1 ± 7.1;P=0.008), less severe migraine (RA: 2.18 ± 1.05; SA: 2.93 ± 0.61;P=0.004), more responders (RA: 19 versus SA: 7), and increased pressure pain thresholds. No other group difference was found. Group differences were maintained at the end of the three-month follow-up, but not at the one-year follow-up. No severe adverse event was reported. Blinding was successful.Discussion. Manual acupuncture was an effective and safe treatment for short-term relief of frequent migraine in adults. Larger trials are warranted.

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Nonsurgical Management of Apical Root Perforation Using Mineral Trioxide Aggregate

Case Reports in Dentistry ◽

10.1155/2021/5583909 ◽

2021 ◽

Vol 2021 ◽

pp. 1-5

Author(s):

Omar Alzahrani ◽

Faisal Alghamdi

Keyword(s):

Success Rate ◽

Mineral Trioxide Aggregate ◽

Apical Part ◽

Success Rates ◽

Nonsurgical Management ◽

Gutta Percha ◽

Tissue Healing ◽

Root Canal Retreatment ◽

One Year ◽

The One

This study illustrates a conservative approach to nonsurgical management of apical root perforation in maxillary first molars. A patient was referred for retreatment of a maxillary left first molar. Her chief complaint was dull pain while biting in her maxillary left first molar. Periapical radiography showed radiolucency related to the mesiobuccal root and overextended gutta-percha through a perforation in the apical part of the distobuccal root. A CBCT scan was acquired and revealed the location and size of the apical perforation. The clinical examination showed that the tooth has been endodontically treated and the canals were filled, tender to percussion and palpation. Thus, the nonsurgical root canal retreatment was done and the perforation site was repaired by using mineral trioxide aggregate (MTA). At the one-year follow-up, after the management of apical root perforation, we observed periapical tissue healing and no pain due to percussion and palpation, without any clinical/radiological signs or symptoms. The prognosis of this case has a higher success rate with the development of new materials such as MTA. The MTA not only can seal the site of the perforation but also has the ability to induce calcification. Many factors can contribute to the success rate of perforated cases, including time, size, and location of the perforation. With the use of this material and good tools like a microscope, there are those with having higher chances of repair and eventually higher success rates.

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A Clinical and Radiographic Evaluation of Zirconia Dental Implants: 10-Year Follow-Up

International Journal of Dentistry ◽

10.1155/2021/7534607 ◽

2021 ◽

Vol 2021 ◽

pp. 1-10

Author(s):

Andrea Enrico Borgonovo ◽

Susanna Ferrario ◽

Carlo Maiorana ◽

Virna Vavassori ◽

Rachele Censi ◽

...

Keyword(s):

Bone Loss ◽

Dental Implants ◽

Clinical Success ◽

Radiographic Evaluation ◽

Success Rates ◽

Marginal Bone Loss ◽

Single Tooth ◽

Zirconia Implants

Purpose. The aim is to evaluate the survival and success rates, as well as the marginal bone loss (MBL) and periodontal indexes, of zirconia implants with 10-year follow-up. Materials and Methods. 10 patients were selected and 26 one-piece zirconia implants were used for the rehabilitation of single tooth or partially edentulous ridge. After 10 years, a clinical-radiographic evaluation was performed in order to estimate peri-implant tissue health and marginal bone loss. Results. The survival and success rates were 100%. The average marginal bone loss from baseline to 120 months after surgery was 0.92 ± 0.97 mm. Conclusion. One-piece zirconia dental implants are characterised by high biocompatibility, low plaque adhesion, and absence of microgap that can be related to the clinical success of these implants.

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Cost-Effectiveness of Percutaneous Automated Lumbar Nucleotomy

Interventional Neuroradiology ◽

10.1177/159101999900500106 ◽

1999 ◽

Vol 5 (1) ◽

pp. 35-42 ◽

Cited By ~ 2

Author(s):

R. Dullerud ◽

H. Lie ◽

B. Magnæs

Keyword(s):

Cost Effectiveness ◽

Surgical Treatment ◽

Lumbar Disc ◽

Invasive Procedure ◽

Cost Effective ◽

Clinical Results ◽

Complication Rates ◽

Success Rates ◽

One Year ◽

The Cost

This study was conducted in order to evaluate the cost-effectiveness of percutaneous automated lumbar nucleotomy in comparison with traditional macro-procedure discectomy in the treatment of herniated discs. Sixty-eight patients undergoing surgical procedures and 90 treated with nucleotomy were consecutively included. Both cohorts were assessed pre-operatively and at regular intervals for one year or more after treatment by independent observers, using a clinical overall scoring system (COS) with 0 being the best attainable result and 1000 the poorest conceivable status of the patients. There were better clinical results after surgery with 78% successes after one year compared to 62% after nucleotomy. By including subsequent operations and re-operations after failure to respond to the primary treatment, the success rates rose to 79% and 77%, respectively. The cost of surgical treatment was calculated to USD 6.119 per patient and the cost of a nucleotomy procedure was USD 1.252. Owing to an almost five times higher price of surgery than nucleotomy, the latter turned out to be 2.7 to 3.9 times more cost-effective, depending on whether secondary treatment was included or not. Due to the minimal difference in final outcome between the groups, however, the marginal cost per extra success in patients primarily treated with surgery was as high as USD 205.850. The study concludes that nucleotomy, as a mini-invasive procedure with low complication rates and the potential of a quick recovery, is more cost-effective than traditional surgical treatment for lumbar disc herniation.

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Salvage therapy with Sodium chlorosum (formerly DAC N-055) for cases of refractory lupoid cutaneous leishmaniasis: results from a compassionate use study with 0.09% Sodium chlorosum in amphiphilic basic cream

BMC Infectious Diseases ◽

10.1186/s12879-019-4518-x ◽

2019 ◽

Vol 19 (1) ◽

Author(s):

Sara Molkara ◽

Elaheh Poursoltani ◽

Kurt-Wilhelm Stahl ◽

Masoud Maleki ◽

Ali Khamesipour ◽

...

Keyword(s):

Clinical Response ◽

Cutaneous Leishmaniasis ◽

Controlled Trial ◽

Complete Response ◽

Sodium Chlorite ◽

Registration Number ◽

One Year ◽

The One ◽

Lost To Follow Up

Abstract Background Lupoid cutaneous leishmaniasis (LCL) is known as a rare but serious complication of anthroponotic cutaneous leishmaniasis (ACL) resistant to conventional treatments. Sodium chlorosum, a pro-oxidative preparation of pharmaceutical sodium chlorite (NaClO2), has been successfully used for the treatment of Old World cutaneous leishmaniasis lesions (OWCL) and of some LCL cases in Afghanistan. This clinical trial study aimed to evaluate the effect of a last resort therapy with topical 0.09% sodium chlorosum on LCL in Iran. Methods Twenty Iranian patients (12 women and 8 men) with LCL refractory to treatment were included in this salvage study. A magistral preparation of sodium chlorosum (10 mM NaClO2 in amphiphilic basic cream) was applied twice daily to the lesions for 6 weeks and continued up to 12 weeks in patients who showed a clinical response within the first 6 weeks. Responders were followed up for a maximum of 1 year. Lesions were photographed during weekly visits. Disappearance of erythema and indurated lesions were rated as complete clinical response. Results Patients with a mean age of 28.6 (±24.3) and with an ACL proven lesion history of 3.8 (±1.4) years were treated for an average of 7.9 (±1.8) weeks. At the end of the treatment period (12th week), a complete response was observed in 9 of 20 patients (45%). During the one-year follow-up period, LCL lesions recurred in 4 of these 9 patients (with one patient showing only a tiny lesion) and one case lost to follow up whereas the other four remained completely lesion-free. Mild temporary side-effects such as erythema and itching were seen in 4 of 20 patients (20%). Conclusions Topical sodium chlorosum showed promising therapeutic results and can be considered as safe, painless, and relatively effective treatment for LCL, an ethical prerequisite for a two-armed controlled trial. Trial registration This study was registered in Iranian registry of clinical trials on 2019-02-02 with registration number IRCT20190114042356N1.

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