scholarly journals The Relevance of the Use of Radiographic Planning in Order to Avoid Complications in Mandibular Implantology: A Retrospective Study

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Gilberto Sammartino ◽  
Juan Carlos Prados-Frutos ◽  
Francesco Riccitiello ◽  
Pietro Felice ◽  
Vincenzo Cerone ◽  
...  
Keyword(s):  
Tooth Loss ◽  
Alveolar Bone ◽  
Radiographic Examination ◽  
Second Molar ◽  
Constant Degree ◽  
Implant Placement ◽  
Risk Areas ◽  
The Difference ◽  
Cortical Perforation ◽  
Vertical Height

The aim of this retrospective radiological study was to evaluate the variability of the mandibular anatomy in the presence and absence of teeth and to consider how it could influence implant planning. 187 mandibular CT DentaScans were selected from our department archive according to the inclusion criteria. The axial height, vertical height, angulation of the bone crest, and the bone available for ideal implant placement were measured. The analysis of the data shows that the mandible contour presents a constant degree of angulation. The variation of angulation in the absence of teeth was statistically significant only in the region between the canine and the first premolar and in that between the second premolar and the first molar. The difference between the crest height and the available distance to place the implant was greater in the region of the second molar while in the other regions the implant planning was made complex by postextraction resorption. Alveolar bone resorption after tooth loss can be considered as a risk factor for lingual cortical perforation during the insertion of an implant. To avoid potential intra/postoperative complications, 3D radiographic examination is recommended in order to study the mandibular anatomy and identify the risk areas.

scholarly journals Osseointegration of Dental Implants in a Patient with Hajdu-cheney Syndrome

2016 ◽  
Vol 10 (1) ◽  
pp. 575-586 ◽  
Author(s):  
Panagiota Dokou ◽  
Ioannis K. Karoussis ◽  
George Papavasiliou ◽  
Phophi Kamposiora ◽  
Theophilos P. Vrahopoulos ◽  
...  
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Tooth Loss ◽  
Alveolar Bone ◽  
Bone Destruction ◽  
Periodontal Treatment ◽  
Radiographic Examination ◽  
Implant Placement ◽  
Maintenance Program ◽  
Periodontal Maintenance

Background: Hajdu-Cheney Syndrome (HCS) is a rare hereditary bone metabolism disorder characterized by acro-osteolysis, short stature, craniofacial changes, periodontitis and premature tooth loss. Extensive search of the current literature revealed no reports of implant placement in patients with HCS. Case Report: A 22-year old woman with osteoporosis, generalized advanced chronic periodontitis and premature tooth loss was referred to the Postgraduate Clinic of Periodontology, University of Athens-Greece. The patient was diagnosed in 2001 with HCS. The patient received non-surgical periodontal treatment and several teeth were extracted due to extensive alveolar bone loss. After careful consideration of the possible implications deriving from the patient’s condition and having taken her young age into account, initially, a dental implant was placed in the upper right first premolar region. Specific protocols such as longer healing periods were implemented, so five years after placement and successful osseointegration of this implant, four additional dental implants were placed in the posterior regions of the maxilla and the mandible. Prosthetic rehabilitation followed 6 months after implant placement. Upon completion of periodontal treatment, the patient was enrolled in a periodontal maintenance program. Results: Clinical and radiographic examination of the patient during the periodontal maintenance program after implant placement revealed no abnormalities in the implant region. Conclusion: Patients with HCS suffer from periodontitis, bone destruction and premature tooth loss. This case indicates the successful osseointegration of dental implants in patients with HCS. However, further research is required in order to determine the predictability of dental implant placement in those patients.

scholarly journals Periodontal Status of Postmenopausal Women with Osteoporosis

2011 ◽  
Vol 2 (4) ◽  
pp. 297-301 ◽  
Author(s):  
Shyam Padmanabhan ◽  
CD Dwarakanath ◽  
Rashmi Paramashivaiah
Keyword(s):  
Bone Loss ◽  
Postmenopausal Women ◽  
Tooth Loss ◽  
Alveolar Bone ◽  
Local Environment ◽  
Radiographic Examination ◽  
Age Group ◽  
Clinical Attachment Loss ◽  
History Of ◽  
Clinical Indices

ABSTRACT Introduction Osteoporosis a common metabolic disorder in postmenopausal women, with characteristic loss of bone mass, is associated with periodontitis and tooth loss according to the vast accumulating evidence. This association needs further perusal which was addressed in the following study. Materials and methods The study subjects were postmenopausal women (No:104) in the age group of 35 to 60 years. Diagnosis of osteoporosis was by standard tests like clinical, radiographic tests and or bone densitometry. Case history of subjects (i.e. dental, personal, medical and menopausal) was elicited verbally and periodontal examination was carried out. Estrogen (17-β estradiol) and calcium assays were measured in 20 of these patients. Results All subjects completed their periodontal and radiographic examination. Indices to measure local factors were accompanied by increase in clinical parameters for periodontitis. Alveolar bone loss visible radiographically correlated with clinical indices and clinical attachment loss. Hormonal assays, i.e. serum 17-β. Estradiol and calcium were found to be below normal for examined cases. Majority of patients had periodontitis, half being localized and the remaining generalized. Conclusion Mandibular cortex showed osteoporosis in most of the cases. Tooth loss was not an apparent finding. Osteoporosis did not show an association with periodontitis as much as the local environment. Thus, it could be concluded that osteoporosis may not be an important risk factor for periodontitis and oral bone loss.

scholarly journals Interpretasi cone beam computed tomography 3-dimension dalam pemasangan implan dental di RumahSakit Gigi MulutFakultas Kedokteran Gigi Universitas Padjajaran (Interpretation of cone beam computed tomography 3-dimension in inserting dental implant at Dental Hospital of Faculty of Dentistry Padjajaran University)

2015 ◽  
Vol 14 (1) ◽  
pp. 50
Author(s):  
Farina Pramanik ◽  
Ria N. Firman
Keyword(s):  
Computed Tomography ◽  
Dental Implant ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Treatment Plan ◽  
Three Dimensions ◽  
Cone Beam ◽  
Radiographic Examination ◽  
Implant Placement ◽  
Dental Hospital

Radiographic examination is one of the examinations required in determining the treatment plan and evaluating thesuccess of dental implant placement. Cone beamcomputed tomography3D(CBCT 3D)is a tool that produce radiographicimaging in three dimensions that can meet the information needed by dentists/specialists in dental implant placement.This report discusses the role of interpretating the CBCT 3D bone area, indication of dental implant with give a sight3D, measure the distance and position of the implant and to assess the quality of the bone at dental implant placement.Interpretation of CBCT 3D case is the size of the dental implant alveolar bone morphometric teeth region 46 and 37qualified radiographically for dental implants. The conclusion of this paper is a CBCT 3D can be a determinant of thesuccess of dental implant placement as capable of being able to analyze a complete, clear and more accurate measurementthrough a 3D picture, the analysis of the size/3D morphometric, density analysis, and histogram/ trabecular analysis.

scholarly journals Three-dimensional alveolar bone assessment of mandibular molars for immediate implant placement: a virtual implant placement study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Haida Chen ◽  
Wei Wang ◽  
Xinhua Gu
Keyword(s):  
Alveolar Bone ◽  
Inferior Alveolar Nerve ◽  
Horizontal Distance ◽  
Second Molar ◽  
Implant Placement ◽  
Computed Tomography Images ◽  
Mandibular Molar ◽  
Immediate Implant ◽  
The Mean ◽  
Molar Region

Abstract Background To elucidate the anatomical features of the mandibular molar region to allow safe immediate implant placement. Methods Cone-beam computed tomography images of 150 patients (600 teeth) were reviewed retrospectively. The virtual implants were placed in the mandibular first and second molar region. The anatomic structures of the mandible and inter-radicular septum were both categorized into three types. The relationship between implant and inferior alveolar nerve (IAN), and the horizontal distance from the implant surface to the bone wall were analyzed. Variables were compared using a student’s t-test, or Mann–Whitney U test. Results Type U (39.0%) and type S (56.0%) were the most common in the first molar, while type U (67.7%) and type M (54.7%) had the highest prevalence rate in the second molar. The mean distance from the level where the virtual implant was completely surrounded by bone to IAN was 7.06 mm. The mean horizontal widths from the implant to the mesial and distal socket wall were 1.59 mm and 1.89 mm. The widths of the inter-radicular septum and the distances from implant to the buccal and lingual plate on different sections were significantly associated with tooth position (P < .05). Conclusions In the first molar region, the implant is suggested to be placed in the center of the inter-radicular septum, while in the second molar region, the mesial root socket could be considered. Immediate implant placement in the mandibular second molar sockets shows a high risk of IAN injury, lingual perforation, and inadequate primary stability.

scholarly journals Evaluation of the periodontal status of a patient diagnosed with Sheehan syndrome: A case report

2021 ◽  
Vol 11 (Suppl. 1) ◽  
pp. 308-311
Author(s):  
Seval Ceylan Şen ◽  
Nuriye Işıl Saygun ◽  
Arzu Or Koca ◽  
Erkan Özcan
Keyword(s):  
Case Report ◽  
Bone Resorption ◽  
Tooth Loss ◽  
Alveolar Bone ◽  
Radiographic Examination ◽  
Target Tissue ◽  
Periodontal Status ◽  
Periodontal Tissues ◽  
Anterior Teeth ◽  
Sheehan Syndrome

Aim: Some immunological changes occurring in mothers during pregnancy increase their susceptibility to infections, including periodontal infections. Sheehan syndrome (SS) is a disease that occurs because of severe postpartum hemorrhage causing ischemic pituitary necrosis. The presence of multiple hormonal deficiencies leads to the impairment of bone microarchitecture, which can cause osteopenia and even osteoporosis. Osteoporosis and periodontitis are both chronic diseases characterized by bone loss. Moreover, recent studies have shown that there is a relationship between menopause, osteoporosis, alveolar bone resorption, and tooth loss. This case report aims to evaluate the oral and periodontal status of a patient with SS and to raise awareness about dental and periodontal problems that may occur in such patients. Methodology: A 63-year-old female patient diagnosed with SS in the endocrinology clinic was referred to the periodontology clinic with complaints of multiple tooth loss, mobility in her teeth, and gingival bleeding. In the clinical and radiographic examination of the patient, it was determined that all teeth had horizontal bone resorption; moreover, there was mobility in the mandibular anterior teeth and hemorrhage in the gums. When the patient’s laboratory results were examined, it was seen that the basal plasma levels of free triiodothyronine (T3) and thyroxine (T4), growth hormone (GH), prolactin (PRL), follicle stimulating hormone (FSH), luteinizing hormone (LH), progesterone, and total testosterone values were significantly lower, and the anterior pituitary elevation was significantly decreased in pituitary magnetic resonance (MR) imaging. Conclusion: The periodontium is the target tissue of sex and other hormones. Hormonal changes may affect the inflammatory–immune tissue responses of periodontal tissues. Many studies have shown that thyroid and sex hormones affect oral and especially periodontal tissues. The degradation of hormonal hemostasis may induce a series of pathological events in the oral environment, resulting in inflammatory changes in gingival tissues, periodontal attachment losses, and destruction of the alveolar bone. Systemic diseases that affect hormonal conditions, such as SS, must be considered in the evaluation of oral health. Medical physicians should refer their patients to the dentist for consultation when evaluating patients’ hormonal status and planning their treatment.   How to cite this article: Şen SC, Saygun NI, Or Koca A, Özcan E. Evaluation of the periodontal status of a patient diagnosed with Sheehan syndrome: A case report. Int Dent Res 2021;11(Suppl.1):308-11. https://doi.org/10.5577/intdentres.2021.vol11.suppl1.46     Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.  

scholarly journals Comparison of one versus two maxillary molars distalization with iPanda: a finite element analysis

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Kamontip Sujaritwanid ◽  
Boonsiva Suzuki ◽  
Eduardo Yugo Suzuki
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Alveolar Bone ◽  
Vertical Direction ◽  
Minimal Amount ◽  
Element Analysis ◽  
Molar Distalization ◽  
Second Molar ◽  
Maxillary Molars ◽  
Displacement Patterns

Abstract Background The purpose of this study was to compare the stress distribution and displacement patterns of the one versus two maxillary molars distalization with iPanda and to evaluate the biomechanical effect of distalization on the iPanda using the finite element method. Methods The finite element models of a maxillary arch with complete dentition, periodontal ligament, palatal and alveolar bone, and an iPanda connected to a pair of midpalatal miniscrews were created. Two models were created to simulate maxillary molar distalization. In the first model, the iPanda was connected to the second molar to simulate a single molar distalization. In the second model, the iPanda was connected to the first molar to simulate “en-masse” first and second molar distalization. A varying force from 50 to 200 g was applied. The stress distribution and displacement patterns were analyzed. Results For one molar, the stress was concentrated at the furcation and along the distal surface in all roots with a large amount of distalization and distobuccal crown tipping. For two molars, the stress in the first molar was 10 times higher than in the second molar with a great tendency for buccal tipping and a minimal amount of distalization. Moreover, the stress concentration on the distal miniscrew was six times higher than in the mesial miniscrew with an extrusive and intrusive vector, respectively. Conclusions Individual molar distalization provides the most effective stress distribution and displacement patterns with reduced force levels. In contrast, the en-masse distalization of two molars results in increased force levels with undesirable effects in the transverse and vertical direction.

Mind the Gap: Alveolar Bone Graft Revision in the Era of Computed Tomography

2021 ◽  
pp. 105566562110026
Author(s):  
Ema Zubovic ◽  
Gary B. Skolnick ◽  
Abdullah M. Said ◽  
Richard J. Nissen ◽  
Alison K. Snyder-Warwick ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Grafting ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Alveolar Bone ◽  
Tertiary Care ◽  
Radiographic Examination ◽  
Graft Take ◽  
Alveolar Bone Grafting ◽  
Ct Evaluation

Objective: To determine the rate of revision alveolar bone grafting (ABG) in patients with cleft lip and palate (CLP) before and after the introduction of postoperative computed tomography (CT). Design: Retrospective case–control study analyzing the incidence of revision ABG in patients with and without postoperative CT scans for graft success evaluation. Setting: Academic tertiary care pediatric hospital. Patients: Eighty-seven patients with CLP or cleft lip and alveolus treated with autologous iliac crest bone grafting for alveolar clefts over a 10-year period (January 2009 to March 2019) with minimum 6-month follow-up. Fifty patients had postoperative CT evaluation; 37 did not. Interventions: Postoperative CT to determine ABG success, versus standard clinical examination and 2-dimensional radiographs. Main Outcome Measures: Requirement for revision ABG, defined as failure of the original graft by clinical or radiographic examination. Results: Fifty-eight percent of patients underwent a postoperative CT scan at median interval of 10 months after surgery. Patients with postoperative CT evaluation had a 44% rate of revision ABG (22/50) for inadequate graft take, compared to 5% (2/37) in patients without postoperative CT ( P < .001; 95% CT, 31%-58% in the CT group, 1%-16% in the non-CT group). Conclusions: Computed tomography evaluation after ABG is associated with a significantly increased revision rate for inadequate graft take. The presence of a secondary palatal fistula at the time of original ABG is not associated with revision requirement. Lack of standardized dental and orthodontic records complicates the study of ABG outcomes and presents an area for systems-based improvement.

scholarly journals Tooth loss in complying and non-complying periodontitis patients with different periodontal risk levels during supportive periodontal care

2021 ◽  
Author(s):  
Roberto Farina ◽  
Anna Simonelli ◽  
Andrea Baraldi ◽  
Mattia Pramstraller ◽  
Luigi Minenna ◽  
...  
Keyword(s):  
Active Treatment ◽  
Clinical Relevance ◽  
Tooth Loss ◽  
Loss Rate ◽  
Risk Levels ◽  
Recall Interval ◽  
Level 3 ◽  
The Difference ◽  
Periodontal Risk

Abstract Objectives To evaluate yearly tooth loss rate (TLR) in periodontitis patients with different periodontal risk levels who had complied or not complied with supportive periodontal care (SPC). Materials and methods Data from 168 periodontitis patients enrolled in a SPC program based on a 3-month suggested recall interval for at least 3.5 years were analyzed. For patients with a mean recall interval within 2–4 months (“compliers”) or > 4 months (“non-compliers”) with different PerioRisk levels (Trombelli et al. 2009), TLR (irrespective of the cause for tooth loss) was calculated. TLR values were considered in relation to meaningful TLR benchmarks from the literature for periodontitis patients either under SPC (0.15 teeth/year; positive benchmark) or irregularly complying with SPC (0.36 teeth/year; negative benchmark). Results In both compliers and non-compliers, TLR was significantly below or similar to the positive benchmark in PerioRisk level 3 (0.08 and 0.03 teeth/year, respectively) and PerioRisk level 4 (0.12 and 0.18 teeth/year, respectively). Although marked and clinically relevant in non-compliers, the difference between TLR of compliers (0.32 teeth/year) and non-compliers (0.52 teeth/year) with PerioRisk level 5 and the negative benchmark was not significant. Conclusion A SPC protocol based on a 3- to 6-month recall interval may effectively limit long-term tooth loss in periodontitis patients with PerioRisk levels 3 and 4. A fully complied 3-month SPC protocol seems ineffective when applied to PerioRisk level 5 patients. Clinical relevance PerioRisk seems to represent a valid tool to inform the SPC recall interval as well as the intensity of active treatment prior to SPC enrollment.

scholarly journals Maxillary Sinus Augmentation with Decellularized Bovine Compact Particles: A Radiological, Clinical, and Histologic Report of 4 Cases

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Antonio Scarano
Keyword(s):  
Postoperative Period ◽  
Compact Bone ◽  
Automated System ◽  
Graft Material ◽  
Sinus Augmentation ◽  
Endosseous Implants ◽  
Implant Placement ◽  
Posterior Maxilla ◽  
The Mean ◽  
Vertical Height

Background. One of the most problematic regions for endosseous implants is the posterior maxilla, not only having poor bone density, but also lacking adequate vertical height as a result of sinus pneumatization. The purpose of the present study was a radiologic, histological, and histomorphometrical evaluation, in humans, of specimens retrieved from sinuses augmented with decellularized bovine compact particles, after a healing period of 6 months. Methods. Four patients, with atrophic resorbed maxillas, underwent a sinus lift augmentation with decellularized bovine compact bone from bovine femur. The size of the particles used was 0.25–1 mm. A total of four grafts and 5 biopsies were retrieved and processed to obtain thin ground sections with the Precise 1 Automated System. Results. The mean volume after graft elevation calculated for each of the 4 patients was 2106 mm3 in the immediate postoperative period (5–7 days), ranging from 1408.8 to 2946.4 mm3. In the late postoperative period (6 months) it was 2053 mm3, ranging from 1339.9 to 2808.9 mm3. Histomorphometry showed that newly formed bone was 36±1.6% and marrow spaces were 34±1.6%, while the residual graft material was 35±1.4%. Conclusion. In conclusion, based on the outcome of the present study, Re-Bone® can be used with success in sinus augmentation procedures and 6 months are considered an adequate time for maturation before implant placement.

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