Association between Bone Density Values, Primary Stability and Histomorphometric Analysis of Dental Implant Osteotomy Sites on the Upper Jaw

Ivanova, Vasilena; Chenchev, Ivan; Zlatev, Stefan; Atanasov, Dimitar T

doi:10.3897/folmed.62.e49424

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Дослідження виконували в спіральному режимі з товщиною томографічного зрізу 1 мм. Опрацьовуючи інформацію СКТ-досліджень, вивчали дані зображень у різних площинах, отримували тривимірні зображення, визначали щільність кісткової тканини за шкалою Hansfield, аналізували гістограми і графіки розподілу щільності [16]. У процесі дослідження оцінювали параметри кісткової тканини альвеолярних відростків, щільність кістки, де планували встановлення імплантатів, а також виключали наявність патологічних змін у ділянці, де планували проведення імплантації.…”

Section: матеріали і методи дослідженняunclassified

X-Ray Assessment of Jaw Bone Tissue in Patients With Systemic Osteoporosis Before the Surgical Stage of Dental Implantation

Datsenko

2023

Ukr. Dent. Alm.

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The assessment of the initial state of bone tissue is important not only for the placement of implants in accordance with the chosen treatment plan, but also for predicting the results of their osseointegration. Until recently, systemic connective tissue diseases were a contraindication to implantation, although it is believed that osseointegrated contact between the surface of an unloaded implant and the surrounding bone tissue is also possible in the case of osteoporosis. However, the effectiveness of implantation in such cases is highly questionable, because with a decrease in the mineral density of bone tissue and changes in its metabolism, there is often an increase in destruction processes, which leads to pathological bone remodeling. The aim of the study – to conduct a comparative analysis of the condition, structure and mineral density of jaw bone tissue in patients with systemic osteoporosis, depending on the sex, before the surgical stage of dental implantation. Materials and Methods. The condition, structure and density of bone tissue before the surgical stage of dental implantation were determined in 87 patients who needed dental implantation. Orthopantomograms were used to analyze the state of bone tissue in the areas where the operation was planned, for which the type of bone quality was determined according to the C.E. Misch classification. To evaluate the structure and density of bone tissue, patients were examined using spiral computed tomography (SCR) on a Picker PQ 2.00 computed tomograph (Picker International Ink., USA). When processing the information from the CT studies, the image data were studied in different planes (to determine the width and height of the alveolar ridge), and the bone density was determined by the Hansfield scale. To assess the state of bone tissue, ultrasonic densitometry was performed using an Omnisense 7000S apparatus (Sunlight Medical, Israel). Results and Discussion. In women with osteoporosis of group I, the radiological characteristics of the bone in the areas of future dental implantation in 36,84% and 34,20% corresponded to bone type D3 and D4, respectively. In men with osteoporosis of group II, bone type D1 prevailed (28,57% of patients) and D2 – 33,33% of patients, as well as in subjects of group III without osteoporosis, in whom the frequency of bone type D1 was visualized in 53,57% of patients and D2 in 28,57% of patients, in the absence of bone type D4. Densitometric studies revealed a decrease in the width and height of the alveolar spines in patients with systemic osteoporosis, with a prevalence of this trend in women of group I. At the same time, the passage of an ultrasound wave along the mandible was significantly lower in patients with osteoporosis compared to those without BMD disorders: 1,9 times in women and 1,3 times in men, p,p1<0.01. Conclusions. Thus, metabolic disorders in systemic osteoporosis adversely affect the structures of the oral cavity, especially in women, which may be the reason for the low effectiveness of dental implants and indicate the need to improve orthopedic and surgical treatment by developing adequate osteotropic treatment.

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Section: матеріали і методи дослідженняunclassified

X-Ray Assessment of Jaw Bone Tissue in Patients With Systemic Osteoporosis Before the Surgical Stage of Dental Implantation

Datsenko

2023

Ukr. Dent. Alm.

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Increased Material Density within a New Biomechanism

Andreucci

Fonseca

Jorge

2022

MCA

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A new mechanism, applied in this study as a biomechanical device, known as a Bioactive Kinetic Screw (BKS) for bone implants is described. The BKS was designed as a bone implant, in which the bone particles, blood, cells, and protein molecules removed during bone drilling are used as a homogeneous autogenous transplant at the same implant site, aiming to optimize the healing process and simplify the surgical procedure. In this work, the amount of bone that will be compacted inside and around the new biomechanism was studied, based on the density of the bone applied. This study allows us to analyze the average bone density in humans (1.85 mg/mm3 or 1850 µg/mm³) with four different synthetic bone densities (Sawbones PCF 10, 20, 30 and 40). The results show that across all four different synthetic bones densities, the bone within the new model is 3.45 times denser. After a pilot drill (with 10 mm length and 1.8 mm diameter), in cases where a guide hole is required, the increase in ratio is equal to 2.7 times inside and around the new biomechanism. The in vitro test validated the mathematical results, describing that in two different materials, the same compact factor of 3.45 was determined with the new biomechanical device. It was possible to describe that BKS can become a powerful tool in the diagnosis and treatment of natural bone conditions and any type of disease.

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Reliability of Grayscale Value for Bone Density Determination in Oral Rehabilitation using Dental Implants

Rai,

Misra,

Misra

et al. 2023

International Journal of Applied &Amp; Basic Medical Research

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Introduction: Quality and quantity of jaw bones have been previously classified in literature using different methods. Imaging modalities such as computed tomography (CT), successfully determine bone density of jaws. This study aims to establish the role of cone-beam CT (CBCT) in determining the density of cortical and cancellous bones at different jaw sites. Materials and Methods: Eighty-three possible implant sites in healthy patients were evaluated using NewTomGiano CBCT machine. Cross-sections were obtained and cortical and cancellous bone densities on different aspects of the virtual implant in terms of Hounsfield unit (HU) were determined using New Net Technologies software version 6.1 and were classified according to software from D1 to D4. Data were entered into SPSS software (version 19.0) and were statistically analyzed. Results: The mean HU showed the highest value for cortical and cancellous in the anterior mandible (mean HU 1874.01 and 1131.73, respectively) followed by the posterior mandible (mean HU 1789.20 and 872.95, respectively) and least in posterior maxilla (mean HU 1068.26 and 830.04, respectively). Maximum D1 bone type was found in cortical bone and D2 bone type was noted in cancellous bone area. Males showed very highly significant cortical bone thickness (P < 0.001) whereas females showed more cancellous bone thickness but the results were nonsignificant. Conclusion: A high degree of concordance between different regions of jaw bones with a strong correlation between the four bone types was obtained. Bone density plays a pivotal role in determining the prognosis of the implant. CBCT has proven to be beneficial in bone density analysis.

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Association between Bone Density Values, Primary Stability and Histomorphometric Analysis of Dental Implant Osteotomy Sites on the Upper Jaw

Cited by 3 publications

References 29 publications

X-Ray Assessment of Jaw Bone Tissue in Patients With Systemic Osteoporosis Before the Surgical Stage of Dental Implantation

X-Ray Assessment of Jaw Bone Tissue in Patients With Systemic Osteoporosis Before the Surgical Stage of Dental Implantation

Increased Material Density within a New Biomechanism

Reliability of Grayscale Value for Bone Density Determination in Oral Rehabilitation using Dental Implants

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