Reliability of the Resonance Frequency Analysis Values in New Prototype Transepithelial Abutments: A Prospective Clinical Study

Guerrero-González, María; Monticelli, Francesca; García-Martín, David Saura; Herrero-Climent, Mariano; Ríos-Carrasco, Blanca; Ríos-Santos, José Vicente; Fernández-Palacín, Ana

doi:10.3390/ijerph17186733

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…Therefore, the issue of choosing methods for determining the possibility of immediate or long-term load on the selected type of implants that will ensure the predictable result of their long-term functionality remains relevant. Such indicators are the results of the resonance frequency analysis [8], which perfectly characterizes the stability of even ultrashort implants at all stages of their osseointegration and postosseointegration periods [2], as described in this study.…”

Section: Introductionmentioning

confidence: 79%

Primary and Post-Osseointegration Stability of Short (Ultra-Short) Implants on Edentulous Atrophied Distal Segments of the Mandible - An Indicator of Immediate or Delayed Load

Oshurko,

Oliinyk,

Kuzniak

et al. 2024

Clin. and prev. med.

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Introduction. The issue of determining the possibility of immediate or long-term load on the selected type of implants, which will ensure the predictable result of their long-term functionality, remains an ongoing discussion. The results of the resonance frequency analysis, which perfectly characterize the stability of short and ultrashort implants at all stages of their osseointegration and post-osseointegration periods, can serve as such an indicator basis. Aim. To analyze the primary and post-osseointegration stability of short (ultra-short) implants placed by the methods at the level of the cortical bone layer and subcortically in case of bone atrophy caused by acquired final dentition defects. Materials and methods. The primary and post-osseointegration stability of thirty-nine dental short (h = 6.5 mm X b = 4.0 mm – 20 pieces) and ultra-short (h = 5.5 mm X b = 4.0 mm – 19 pieces) implants placed on the edentulous distal segments of the human mandible was studied. According to the clinical assessment that met the aim and objectives of this study, all patients were divided into four study groups: the first group consisted of patients with a preserved dentition who did not require dental implantation; the second group – 25-45 years old, the third group – 46-60 years old, and the fourth group – ≥ 61 years old. Using the resonance frequency analysis (RFA) method by Penguin Instruments, the results were interpreted in declarative units of measurement – the implant stability quotient (ISQ). Results. The installed short (ultrashort) implants, according to the methodology by the level of the cortical layer of bone tissue, are characterized by their high primary stability by anti-rotational force: in the second group of the study (25-45 years old) with a mean number (M) of 87.0 and an error of the mean (± m) of ± 2.3 ISQ; in the third group (46-60 years old) – 76.4 ± 3.0 ISQ; in the fourth group (persons ≥ 61 years old) – 69.8 ± 4.8 ISQ. Low values of primary stability were obtained in implants installed by the subcortical implantation technique in the second age group of the study and amounted to 59.6 ± 2.7 ISQ with a slight increase to 66.0 ± 4.1 ISQ in the third group and 71.7 ± 4.2 ISQ in the fourth group of the study, which do not guarantee the prognosis of functional redistribution of the supra occlusion immediate load on the biological basis, with further preservation of the course of normal physiological processes in the bone tissue around the implanted implants. Conclusions. Rehabilitation of patients with bone atrophy caused by the loss of the masticatory group of teeth is possible using short (h = 6.5-6.0 mm) and ultra-short (h = 5.5 mm) implants, with clinical justification for the choice of methods of immediate or post-osseointegration load, with a detailed resonance frequency analysis as a priority and reliable method – an effective indicator of their stability, at all stages of clinical rehabilitation of patients.

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Section: Introductionmentioning

confidence: 79%

Primary and Post-Osseointegration Stability of Short (Ultra-Short) Implants on Edentulous Atrophied Distal Segments of the Mandible - An Indicator of Immediate or Delayed Load

Oshurko,

Oliinyk,

Kuzniak

et al. 2024

Clin. and prev. med.

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“…have suggested that removal torque measurement might not be the best test for evaluating osseointegration or the amount of bone around the implant ( 20 ). RFA, on the other hand, is a more direct measurement of the implant stability with reproducible results and independent of the implant type used ( 21 - 24 ).…”

Section: Discussionmentioning

confidence: 99%

Thermal necrosis-aided dental implant removal: A rabbit model pilot study

Hasanoğlu-Erbaşar¹,

Gungormus²,

Alimoğullari³

et al. 2023

Med Oral

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Background The significant advances in the materials and biological aspects of dental implants haven’t completely eradicated the implant failures. The removal of osseointegrated but otherwise failed implants present several challenges including adjacent tissues damage and necessity of bone augmentation for reimplantation. Controlled thermal necrosis has emerged as an alternative technique to aid removal of osseointegrated dental implants with minimal to no defect to healthy bone or surrounding tissues. This study aimed to evaluate the thermal necrosis-aided implant removal method in a rabbit osseointegration model. Material and Methods A total of 8 male New Zealand rabbits were used in the study. Two dental implants were placed on each femur of the rabbits. Heating of the implants was performed after 7 weeks following the implantation. Heating was done by contacting the tip of an electrosurgey tool in monopolar mode at different power settings and contact durations (5W – 2 seconds, 5W – 10 seconds, and 10 W – 10 seconds). No heating was done on the control group. Implant stability right after implantation, before heat application and after heat application was determined using an Osstell™ Mentor Device. Following the removal of implants histological analyses were performed to determine the effects of heat application at cellular level. Results ISQ values of the 10W-10s group was significantly lower compared to the other groups ( p <0.001). No indication of progressive necrosis or irreversible damage was observed in any of the groups. However, the percent of empty-apoptotic lacunae were statistically higher in the 5W-10s and the 10W-10s groups compared the control and the 5W-2s groups. Conclusions Within the conditions of this study, we conclude that heat application with an electrosurgery tool using monopolar mode at 10W power for 10 seconds is optimal for reversing osseointegration with no extensive or progressive damage to the bone. Key words: Animal model, dental implant, implant removal, thermal necrosis.

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“…Other authors used this method to assess, for example, whether the height of the abutment could influence the stability values, and the results showed that the values may vary with the increase in the abutment height [27]. However, other studies have shown that varying the height of the abutments does not change the values measured by Osstell [28,29]. In our study, abutments of similar heights were used, with a difference of 1 mm between the abutments in group A and the abutments in groups B and C. However, when straight abutments were compared with angled abutments, angled abutments had lower stability values measured by RFA [27], corroborating our results.…”

Section: Plos Onementioning

confidence: 99%

Does the index in Morse taper connection affect the abutment stability? An in vitro experimental study

Goyeneche,

Cortellari,

Rodriguez

et al. 2024

PLoS ONE

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The present study compared three different implant and abutment sets of type Morse taper (MT) connection, with- and without-index, were analyzed regarding their mechanical behavior without and with cyclic load application simulating the masticatory function. Ninety implant and abutment (IA) sets were used in the present study, divided into three groups (n = 30 samples per group): Group A, Ideale solid straight abutment (one piece) without index; Group B, Ideale abutment with an angle of 30-degree (two pieces) without index; Group C, Ideale abutment with an angle of 30-degree (two pieces) with index. The abutment stability quotient (ASQ) values, detorque value and rotation angle were measured before and after the cycling load. Twenty IA sets of each group were submitted to mechanical load at 360,000 cycles. The ASQ without load were 64.7 ± 2.49 for the group A, 60.2 ± 2.64 for the group B, 54.4 ± 3.27 for the group C; With load were 66.1 ± 5.20 for the group A, 58.5 ± 6.14 for the group B, 58.9 ± 2.99 for the group C. Detorque values were lower in groups B and C compared to group A (p < 0.05). In conclusion, the presence of the index did not influence the stability values. However, solid straight abutments (group A) showed higher values of stability compared to groups of angled abutments (groups B and C).

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Reliability of the Resonance Frequency Analysis Values in New Prototype Transepithelial Abutments: A Prospective Clinical Study

Cited by 8 publications

References 38 publications

Primary and Post-Osseointegration Stability of Short (Ultra-Short) Implants on Edentulous Atrophied Distal Segments of the Mandible - An Indicator of Immediate or Delayed Load

Primary and Post-Osseointegration Stability of Short (Ultra-Short) Implants on Edentulous Atrophied Distal Segments of the Mandible - An Indicator of Immediate or Delayed Load

Thermal necrosis-aided dental implant removal: A rabbit model pilot study

Does the index in Morse taper connection affect the abutment stability? An in vitro experimental study

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