Diagnostic imaging in dental implantology

Frederiksen, N L

doi:10.1016/s1079-2104(05)80153-2

Cited by 108 publications

(37 citation statements)

References 19 publications

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“…Classical radiographic evaluation (Frederiksen, 1995;Batenburg et al, 1998;Bragger, 1998;Verhoeven et al, 2000;Blanes et al, 2007) and x-ray microcomputed tomography (Akca et al, 2006;Zhao et al, 2009;Wang et al, 2010) have been suggested for the evaluation of the implant fixture, allowing to quantify critical parameters for the assessment of osseointegration. However, resolution problems (Bragger et al, 1992;Mombelli and Lang, 1994) due to diffraction phenomena (Shalabi et al, 2007) around the bone implant interface prevent using x-ray based approaches to measure the interface properties.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of ultrasonic wave propagation for the evaluation of dental implant biomechanical stability

Mathieu

Anagnostou

Soffer

et al. 2011

The Journal of the Acoustical Society of America

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Osseointegration of dental implants remains poorly understood. The objective of this numerical study is to understand the propagation phenomena of ultrasonic waves in prototypes cylindrically shaped implants and to investigate the sensitivity of their ultrasonic response to the surrounding bone biomechanical properties. The 10 MHz ultrasonic response of the implant was calculated using a finite difference numerical simulation tool and was compared to rf signals taken from a recent experimental study by Mathieu et al. [Ultrasound Med. Biol. 37, 262-270 (2011a)]. Reflection and mode conversion phenomena were analyzed to understand the origin of the different echoes and the importance of lateral wave propagation was evidenced. The sensitivity of the ultrasonic response of the implant to changes of (i) amount of bone in contact with the implant, (ii) cortical bone thickness, and (iii) surrounding bone material properties, was compared to the reproducibility of the measurements. The results show that, either a change of 1 mm of bone in contact with the implant, or 1.1 mm of cortical thickness or 12% of trabecular bone mass density should be detectable. This study paves the way for the investigation of the use of quantitative ultrasound techniques for the evaluation of bone-implant interface properties and implant stability.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of ultrasonic wave propagation for the evaluation of dental implant biomechanical stability

Mathieu

Anagnostou

Soffer

et al. 2011

The Journal of the Acoustical Society of America

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“…Technique for assessing cortical shape (visual assessment)Using a radiographic viewer, mandibular cortical shape was determined by observing the mandible distally from the mental foramen bilaterally and categorized into one of three groups, according to the method by Klemetti et al .,[1415161718] as follows: Normal cortex: The endosteal margin of the cortex is even and sharp on both sides.Mildly to moderately eroded cortex: The endosteal margin shows semilunar defects (lacunar resorption) or appears to form endosteal cortical residues, one to three layers thick.Severely eroded cortex: The cortical layer forms heavy endosteal cortical residues and is clearly porous [Figure 1]. …”

Section: Methodsmentioning

confidence: 99%

Diagnostic Efficacy of Panoramic Radiography in Detection of Osteoporosis in Post-Menopausal Women with Low Bone Mineral Density

Bhatnagar

Krishnamurthy

Pagare

2013

Journal of Clinical Imaging Science

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Objective:The aim of the study was to evaluate panoramic radiograph, a commonly taken dental radiograph as a screening tool to detect early osseous changes (normal, mildly or severely eroded) of the mandibular inferior cortex and measure the mandibular cortical width (CW) in post-menopausal women and correlate it with the bone mineral density (BMD) measured by the ultrasound bone sonometer at the mid-shaft tibia region.Materials and Methods:The study included females between 45 years and 65 years of age in their post-menopausal stage (no menstruation for at least 6-12 months). Mandibular indices (mandibular CW and mandibular cortical shape) were evaluated from panoramic radiographs. The BMD assessment was carried out at the mid-shaft tibia region, exactly half-way between the heel and the knee joint perpendicular to the direction of the bone, using an ultrasound bone sonometer. It is a non-invasive device designed for quantitative measurement of the velocity of ultrasound waves as speed of sound in m/s, capable of measuring bone density at one or more skeletal sites. Using 1994 WHO criteria the study subjects were categorized as Group 1: Normal, Group 2: Osteopenia, Group 3: Osteoporosis. (WHO T score for tibia BMD can be used as a standard).Results:The diagnostic efficacy of the panoramic radiograph in detecting osseous changes in post-menopausal women with low BMD was shown to have 96% specificity and 60% sensitivity with mandibular cortical shape and 58% specificity and 73% sensitivity with mandibular CW measurement. Factorial ANOVA analysis carried out indicated a significant correlation of BMD classification with mandibular cortical shape (F = 29.0, P < 0.001, partial eta squared [η2] =0.85), a non-significant correlation with mandibular CW, (F = 1.6, P = 0.23, η2 = 0.86), and a more significant correlation with combined cortical shape and width (F = 3.3, P < 0.05, η2 = 0.70).Conclusion:The study concludes that the combined mandibular cortical findings (P < 0.05) and mandibular cortical shape erosion alone (P < 0.001) on panoramic radiograph are effective indicators of osteoporosis in post-menopausal women.

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“…Cross-sectional imaging, including different kinds of tomographies and magnetic resonance, are the radiographic methods of choice for preoperative evaluation and recommended to assist preoperative examination (10-12). Tomographic techniques provide adequate information concerning the overall shape of the interforaminal region of the mandible.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of anatomical landmarks in the mandibular interforaminal region: A cone-beam computed tomography study

Parnia¹,

Moslehifard²,

Hafezeqoran³

et al. 2012

Med Oral

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Objectives: This study was conducted to assess appearance, visibility, location and course of anatomical landmarks in mandibular interforaminal region using cone-beam computed tomography (CBCT). Study design: A total of 96 CBCT examinations was re-evaluated to exploit anatomical landmarks. The examinations used the Promax 3D CBCT unit. A sole examiner carried out all the measurements. Visibilities of the anatomical landmarks were scored using a four-point rating scale. Results: The mandibular foramen, anterior loop, incisive canal and lingual foramen were observed in 100,84,83,49 % of the images, respectively. The mean size, diameter and width of anterior loop, incisive canal and lingual foramen were obtained 3.54± 1.41, 1.47±0.50 and 0.8 ± 0.09mm, respectively. Conclusion: It is not safe to recommend any definite distance mesially from the mental foramen. The diameter of the canals and foramens should be determined on a case-by-case basis to exploit the appropriate location for each individual. Key words:Anatomical landmarks, cone-beam computed tomography, implant surgery, radiographic evaluation, surgical complications.

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Diagnostic imaging in dental implantology

Cited by 108 publications

References 19 publications

Numerical simulation of ultrasonic wave propagation for the evaluation of dental implant biomechanical stability

Numerical simulation of ultrasonic wave propagation for the evaluation of dental implant biomechanical stability

Diagnostic Efficacy of Panoramic Radiography in Detection of Osteoporosis in Post-Menopausal Women with Low Bone Mineral Density

Characteristics of anatomical landmarks in the mandibular interforaminal region: A cone-beam computed tomography study

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