Presence Of Dehiscence Research Articles

Pre- and Postoperative Evaluation of Immediate and Early Implant Placement in Esthetic Areas with Pre-Extraction Facial Dehiscence: A Retrospective Clinical Study.

The clinical requirement for a good esthetic result for immediate implant placement is the absence of dehiscence in the anterior facial alveolar bone. In the presence of dehiscence, it is recommended to use a connective tissue graft in addition to immediate implant placement or to change to early implant placement. However, the literature focusing on dehiscence is scarce, and the influence of different placement times and combined use of connective tissue graft on postoperative esthetics in cases with dehiscence is unclear. Therefore, we quantitatively evaluated the pre-extraction dehiscence morphology and postoperative changes in the facial tissue of implants in three groups: immediate implant placement (Group I), immediate implant placement with connective tissue graft (Group IC), and early implant placement (Group E). To this end, 52 implants were obtained (20 in Group I, 16 in Group IC, and 16 in Group E). A wider dehiscence increases the risk of soft tissue regression, which was one reason for choosing early implant placement. A combination of immediate implant placement and connective tissue graft, or early implant placement, tended to result in less soft tissue regression due to the thicker postoperative facial soft tissue volume.

Cone Beam CT Analysis of Haller Cells: Prevalence and Relationship with Orbital Floor Dehiscence.

CBCT images of 120 patients were interpreted in coronal plane for the presence of Haller cells and orbital floor dehiscence. The prevalence of Haller cell, presence of dehiscence, unilateral, or bilateral frequency were assessed. In addition, the size was categorized in three groups of small, medium, and large. Chi-square and Cochran-Mantel-Haenszel tests were used for statistical analysis of the data, and p < 0.05 was considered to be significant. A total of 51 male and 69 female with mean ± SD age of 38.84 ± 68.14 were assessed. The overall prevalence of Haller cells was 56.7%, of which 44 (64.7%) were unilateral and 24 were bilateral (35.3%). The majority of the cells (70.7%) were seen in medium (2-4 mm) sized. There was a significant association between Haller cells and orbital floor dehiscence (p ≤ 0.001). The prevalence of Haller cells was remarkably high and the presence of Haller cells was strongly associated with ipsilateral orbital floor dehiscence. Based on the findings of this study, CBCT can be useful in delineation of the bony anatomy of sinonasal complex.

Evaluation of Superior Semicircular Canal Morphology and Its Relationship with Glenoid Fossa Roof Thickness Using Cone Beam Computed Tomography.

This study aimed to evaluate the bone thickness of the superior semicircular canal (SSC) roof and its relationship with the roof thickness of the glenoid fossa (RGF). The cone beam computed tomography (CBCT) images of 280 patients (560 temporal regions) were surveyed. The lowest thickness of the SSC roof was measured and categorized based on the radiological patterns of the Cisneros et al. classification. The thickness of GF and the presence of dehiscence in this part were determined, as well. The relationship between the thickness of the GF roof and the bone thickness covering the SSC was also assessed. The mean thickness of the SSC roof was 0.93 ± 0.48 mm, with no significant difference among different age groups and genders (p > 0.05). However, superior semicircular canal dehiscence (SSCD) was more prevalent among females over 45 years old. Similarly, the individuals with the dehiscence of the GF roof had a 12.93-fold higher chance of SSCD development. The results indicated that the thickness of the bone overlying the SSC was significantly related to the roof thickness of the GF. However, an increase in age resulted in no significant change in the bone thickness of the SSC roof. Gender also had no role in changing the thickness of the bone overlying the SSC. Considering the decrease in the thickness of the SSC roof among females over 45 years of age, menopause may be responsible for this occurrence as well as for the increase in the prevalence of SSCD.

Assessment of Gingival Thickness Using CBCT Compared to Transgingival Probing and Its Correlation with Labial Bone Defects: A Cross-Sectional Study.

The aims of this study were to determine the accuracy and repeatability of CBCT for assessing gingival thickness (GT) as compared to transgingival probing and to investigate the correlation between GT and labial bone defects. This cross-sectional study comprised 37 patients who underwent CBCT imaging. A total of 111 sites were examined, and measurements were obtained from the same points on selected index teeth. The GT was measured, and the presence of dehiscence and fenestration defects was evaluated on the CBCT scans. Transgingival probing was performed at the same points as those used on the scans. Intraexaminer reliability for clinical and radiographic measurements and interexaminer reliability for radiographic measurements were tested. Agreement between the measurement methods and the correlations between GT and labial bone defects were assessed using intraclass correlation coefficient (ICC) and chi-square test, respectively. The agreement between both measurement methods was excellent and statistically significant (ICC = 0.888; P < .001), with a bias of 0.04 (95% CI: 0.01 to 0.08). Significant differences in the occurrence of fenestration (P = .023) and dehiscence defects (P < .001) between the thin and thick gingival phenotypes were observed, and the defects were positively correlated with the thin gingival phenotype. CBCT demonstrated high diagnostic accuracy for GT measurements, with minimal discrepancies from the transgingival method. The presence of dehiscence and fenestration defects was positively correlated with thin gingival phenotype.

Anatomical configurations of the optic canal in the sphenoid sinus in a Hispanic population: computed tomography based study.

The prevalence of the optic canal anatomical variants across the sphenoid sinus varies widely among different ethnic groups. This study aimed to analyse the anatomical variants of the optic canal and their relationship to sphenoid sinus pneumatisation in a Hispanic population. A review of 320 sphenoid sinuses by high-resolution computed tomography was performed. DeLano's classification of the optic canal, presence of dehiscence, septa insertion, sphenoid sinus pneumatisation and presence of Onodi cells were established. Dehiscence of the optic canal was observed in 4.7 per cent (n = 15) of the analysed sinuses. Type 4 and 3 optic canals were significantly more frequent among postsellar sphenoid sinuses than other patterns of sphenoid sinus pneumatisation (p = 0.002 and p = 0.018). A type 4 optic canal has a higher tendency to present inserted septum than other optic canal types (p = 0.014). This study described the optic canal variants in a Hispanic population, which complements existing literature addressing other ethnicities.

Intestinal anastomotic healing models during experimental colitis

BackgroundAnastomotic leakage represents a major complication following resections in colorectal surgery. Among others, intestinal inflammation such as in inflammatory bowel disease is a significant risk factor for disturbed anastomotic healing. Despite technical advancements and several decades of focused research, the underlying mechanisms remain incompletely understood. Animal experiments will remain the backbone of this research in the near future. Here, instructions on a standardized and reproducible murine model of preoperative colitis and colorectal anastomosis formation are provided to amplify research on anastomotic healing during inflammatory disease.MethodsWe demonstrate the combination of experimental colitis and colorectal anastomosis formation in a mouse model. The model allows for monitoring of anastomotic healing during inflammatory disease through functional outcomes, clinical scores, and endoscopy and histopathological examination, as well as molecular analysis.DiscussionPostoperative weight loss is used as a parameter to monitor general recovery. Functional stability can be measured by recording bursting pressure and location. Anastomotic healing can be evaluated macroscopically from the luminal side by endoscopic scoring and from the extraluminal side by assessing adhesion and abscess formation or presence of dehiscence. Histologic examination allows for detailed evaluation of the healing process.ConclusionThe murine model presented in this paper combines adjustable levels of experimental colitis with a standardized method for colorectal anastomosis formation. Extensive options for sample analysis and evaluation of clinical outcomes allow for detailed research of the mechanisms behind defective anastomotic healing.

Airway Complications in Lung Transplant Recipients with Telomere-Related Interstitial Lung Disease

PurposePatients with short telomeres and interstitial lung disease (ILD) appear to have increased mortality and bronchiolitis obliterans syndrome after lung transplant. Given the dysfunctional response of short telomere patients to cell damage and stress due to cell senescence, they may be more susceptible to impaired large airway healing. We hypothesized that post-transplant airway complications, including dehiscence and bronchial stenosis, would be more common in the short telomere ILD transplant population.MethodsWe studied 63 recipients transplanted at two centers between 2009 and 2019 with ILD and short telomeres, defined either by telomere length below the 1st percentile for age in any lineage or below the 10th percentile in the lymphocyte lineage by flow-FISH telomere length analysis of peripheral blood lymphocytes, with or without the presence of a known telomere-related mutation. The primary outcomes were the presence of dehiscence or of significant stenosis (i.e. requiring dilation or stenting) after transplant. The control population was 4,359 adult recipients with ILD transplanted over similar years, taken from the Scientific Registry of Transplant Recipients (SRTR).ResultsAmong the short telomere cohort, 6 patients (9.5%) had dehiscence and 9 (14.3%) had stenosis compared to 1.4% and 3.4%, respectively, in the SRTR cohort. When adjusted for age, sex, and bilaterality, the presence of short telomeres was associated with a significantly higher odds of dehiscence (odds ratio (OR)=7.34, 95% confidence interval (CI)=3.01-17.92, p<0.001) and higher odds of stenosis (OR=4.72, 95% CI 2.26-9.85, p<0.001).ConclusionWe identified an association between the presence of short telomeres and post-transplant large airway complications, including dehiscence and significant stenosis. Airway complications may be a contributor to worse outcomes in patients with telomere-related ILD. Patients with short telomeres and interstitial lung disease (ILD) appear to have increased mortality and bronchiolitis obliterans syndrome after lung transplant. Given the dysfunctional response of short telomere patients to cell damage and stress due to cell senescence, they may be more susceptible to impaired large airway healing. We hypothesized that post-transplant airway complications, including dehiscence and bronchial stenosis, would be more common in the short telomere ILD transplant population. We studied 63 recipients transplanted at two centers between 2009 and 2019 with ILD and short telomeres, defined either by telomere length below the 1st percentile for age in any lineage or below the 10th percentile in the lymphocyte lineage by flow-FISH telomere length analysis of peripheral blood lymphocytes, with or without the presence of a known telomere-related mutation. The primary outcomes were the presence of dehiscence or of significant stenosis (i.e. requiring dilation or stenting) after transplant. The control population was 4,359 adult recipients with ILD transplanted over similar years, taken from the Scientific Registry of Transplant Recipients (SRTR). Among the short telomere cohort, 6 patients (9.5%) had dehiscence and 9 (14.3%) had stenosis compared to 1.4% and 3.4%, respectively, in the SRTR cohort. When adjusted for age, sex, and bilaterality, the presence of short telomeres was associated with a significantly higher odds of dehiscence (odds ratio (OR)=7.34, 95% confidence interval (CI)=3.01-17.92, p<0.001) and higher odds of stenosis (OR=4.72, 95% CI 2.26-9.85, p<0.001). We identified an association between the presence of short telomeres and post-transplant large airway complications, including dehiscence and significant stenosis. Airway complications may be a contributor to worse outcomes in patients with telomere-related ILD.

Three-dimensional evaluation of the effects of injectable platelet rich fibrin (i-PRF) on alveolar bone and root length during orthodontic treatment: a randomized split mouth trial

BackgroundThe role of injectable platelet rich fibrin (i-PRF) in orthodontic treatment has not been investigated with focus on its effect on dental and bony periodontal elements.ObjectiveTo evaluate the efficacy of i-PRF in bone preservation and prevention of root resorption.MethodsA randomized split-mouth controlled trial included 21 patients aged 16–28 years (20.85 ± 3.85), who were treated for Class II malocclusion with the extraction of the maxillary first premolars. Right and left sides were randomly allocated to either experimental treated with i-PRF or control sides. After the leveling and alignment phase, the canines were retracted with 150gm forces. The i-PRF was prepared from the blood of each patient following a precise protocol, then injected immediately before canine retraction on the buccal and palatal aspects of the extraction sites. Localized maxillary cone beam computed tomography scans were taken before and after canine retraction to measure alveolar bone height and thickness and canine root length (indicative of root resorption), and the presence of dehiscence and fenestration. Paired sample t-tests and Wilcoxon signed rank tests were used to compare the changes between groups.ResultsNo statistically significant differences in bone height, bone thickness were found between sides and between pre- and post-retraction period. However, root length was reduced post retraction but did not differ between sides. In both groups, postoperative dehiscence was observed buccally and palatally and fenestrations were recorded on only the buccal aspect.ConclusionsI-PRF did not affect bone quality during canine retraction or prevent canine root resorption. I-PRF did not reduce the prevalence of dehiscence and fenestration.Trial registration ClinicalTrials.gov (identifier number: NCT 03399760. 16/01/2018).

Prevalence of Sigmoid Sinus Dehiscence and Diverticulum among Adults with Skull Base Cephaloceles

Cephaloceles are relatively rare conditions caused by a congenital and/or acquired skull defect. The incidence of associated venous brain anomalies with regard to cephaloceles remains to be fully elucidated. Accordingly, we sought to assess the prevalence of sigmoid sinus dehiscence and diverticula in patients with spontaneous skull base cephaloceles. Our institutional data base was retrospectively queried from 2005 to 2018. Patients in whom spontaneous skull base cephaloceles were identified were ultimately included in the study cohort. These patients subsequently had their sigmoid sinuses re-evaluated with focused attention on the possible presence of dehiscence and/or diverticula. We identified 56 patients: 12 men and 44 women. After re-evaluation of the sigmoid sinuses, evidence of dehiscence and/or diverticula was noted in 21 patients. The right sigmoid sinus was involved in 11 patients, and the left sigmoid sinus was involved in 7 patients, including 3 cases of diverticulum. In 3 patients, evidence of bilateral sigmoid sinus dehiscence and diverticula was noted. Female sex was associated with sigmoid sinus dehiscence and diverticula by univariate analysis (P = .019). By linear regression, cephalocele volume was negatively associated with sigmoid sinus dehiscence and diverticula (coefficient, -2266, P value < .007, adjusted R 2 = 0.1077). By univariate logistic regression using average cephalocele volume as a cutoff, we demonstrate a statistically significant finding of lower volumes being associated with sigmoid sinus dehiscence and diverticula with an odds ratio of 3.58 (P = .05). The prevalence of sigmoid sinus dehiscence and diverticula in patients with cephalocele is high. Female sex is associated with sigmoid sinus dehiscence and diverticula. The cephalocele volume appears to be inversely proportional to sigmoid sinus dehiscence and diverticula.

Anatomic variations of posterior paranasal sinuses and optic nerve.

Aim To define direct anatomical relations of the sphenoidal (alae minores), ethmoidal sinuses and optic nerve, with an emphasis on determining the effect of age on pneumatisation and dehiscence. Methods This retrospective, descriptive study involved 60 consecutive patients: 30 patients younger than 30 and30 patients older than 60 years of age. All patients underwent computerized tomography(CT). The relationship of the optic nerve and the sphenoidal and ethmoidal sinuses was classified. The presence of dehiscence in the bone structures, forming the optic canal, was checked. Dehiscence was defined as absence of visible bone density located between the sinus and the optic nerve. Protrusion of the optic nerve into the sphenoidal sinus was defined as optic nerve surrounded by pneumatised space. Results The most common type of relation between the optic nerve and sphenoidal sinus was type I, where the optic nerve was immediately adjacent to the lateral or superior wall of the sphenoidal sinus, without impression on the sinus wall. Dehiscence was documented in 15 (25%) cases, it was more common in older patients (8, 27%) than in younger ones (7, 23%). The pneumatisation processes were more frequent in patients over 60 (5, 17%) than in those younger than 30 years (4, 13%). Conclusion Surgeons and ophthalmologists should be aware of high frequency of dehiscence of sphenoidal sinus walls when treating adult patients in our population, especially when evaluating risks and complications of surgical procedures or when diagnosing inflammatory or tumorous processes in the close vicinity of posterior paranasal sinuses.

Red cell distribution width predicts mortality in infective endocarditis

Infective endocarditis (IE) is associated with significant morbidity and mortality. Red cell distribution width (RDW) is a recently recognized biomarker of adverse outcome in a number of acute and chronic conditions. To investigate the relationship between RDW and 1-year survival in patients with IE. Clinical records from two tertiary centres were used to analyze data from patients with definite IE. Clinical, echocardiographic and biochemical variables were evaluated along with RDW. One-year survival status after index hospitalization was identified for each patient. One hundred consecutive patients (mean age 47.8±16.7 years; 61% men) with definite IE were enrolled. According to receiver operating characteristic curve analysis, the optimal RDW cut-off value for predicting mortality was 15.3% (area under the curve 0.70; P=0.001). Forty-one patients (41%) died within 1 year; of these, 88% had RDW results>15.3%. Univariate Cox proportional-hazards analysis showed that RDW>15.3%, heart failure, renal failure, cardiac abscess, severe valvular regurgitation and presence of dehiscence were associated with increased mortality. Multivariable Cox proportional-hazards analysis revealed that renal failure (hazard ratio [HR] 3.21, 95% confidence interval [CI] 1.35-7.59; P=0.008), heart failure (HR 2.77, 95% CI 1.1-6.97; P=0.03) and RDW>15.3% (HR 3.07, 95% CI 1.06-8.86; P=0.03) were independent predictors of mortality in patients with IE. According to our results, mortality is high in patients with IE. RDW is a promising biomarker for predicting 1-year survival rates in these patients.

The influence of the initiation of an exercise programme on seroma formation and dehiscence following breast cancer surgery

To verify whether early (first post-operative day) or late initiation (after removal of the continuous suction drain) of a functional rehabilitation exercise programme influences the incidence of seroma formation and dehiscence for women after breast cancer surgery. Benefits of early implementation of an exercise programme initiated with women in the first days following breast cancer surgery are widely known. However, the safe initiation of the exercises is still a controversial issue and some authors correlate early initiation of the exercises with an increase in seroma formation. A prospective, randomised, controlled clinical trial. Seventy-seven women were randomly assigned to initiate the programme on post-operative day 1 (early group = 40) or after removal of the drain (late group = 37) and were monitored until the 45th post-operative day. Patients in the early group were instructed to perform the exercises daily at home, beginning on post-operative day 1, while those of the late group began the exercises after the drain was removed. The assessment for seroma formation and dehiscence was performed on post-operative days 7 and 45. There was no statistically significant difference regard to seroma formation between early group and late group. Also there was no association between the presence of dehiscence and early exercises. The early initiation of the exercises for women, following breast cancer surgery, constitutes a safe practice for the rehabilitation. However, these findings need to be further explored and confirmed in a larger sample. Studies showing evidence that early functional rehabilitation process is a safe practice for women having surgery for breast cancer, as well as the present research, are of interest to health professionals who care for these patients and contribute to the wider global clinical community.

Dehiscence and fenestration in skeletal Class I, II, and III malocclusions assessed with cone-beam computed tomography

To test the null hypothesis that the presence of dehiscence and fenestration was not different among patients with skeletal Class I, II, and III malocclusions. In this retrospective study, a total of 123 cone-beam computed tomography (CBCT) images were obtained with an iCAT scanner (Imaging Sciences International, Hatfield, Pa). Patients with normal vertical patterns were classified according to dental malocclusion and ANB angle. Class I comprised 41 patients-21 girls and 20 boys (mean age, 22.4 ± 4.5 years); Class II comprised 42 patients-22 girls and 20 boys (mean age, 21.5 ± 4.2 years); and Class III comprised 40 subjects-22 girls and 18 boys (mean age, 22.1 ± 4.5 years). A total of 3444 teeth were evaluated. Analysis of variance and Tukey's test were used for statistical comparisons at the P < .05 level. Statistical analysis indicated that the Class II group had a greater prevalence of fenestration than the other groups (P < .001). No difference was found in the prevalence of dehiscence among the three groups. Although fenestration had greater prevalence in the maxilla, more dehiscence was found in the mandible for all groups. In Class I, alveolar defects (dehiscence, fenestration) were matched relatively in both jaws. Furthermore, Class II and Class III subjects had more alveolar defects (41.11% and 45.02%, respectively) in the mandible. Dehiscences were seen with greater frequency in the mandibular incisors of all groups. The null hypothesis was rejected. Significant differences in the presence of fenestration were found among subjects with skeletal Class I, Class II, and Class III malocclusions. Fenestrations had greater prevalence in the maxilla, but more dehiscences were found in the mandible.

Long‐term, retrospective evaluation (implant and patient‐centred outcome) of the two‐implant‐supported overdenture in the mandible. Part 2: marginal bone loss

In part 2 of this long-term, retrospective study on the two-implant-supported overdenture in the mandible, the annual marginal bone loss was evaluated in detail and parameters, with a significant effect on the annual bone loss, were verified. For all 495 patients with an overdenture in the mandible at least 5 years in function, data up to their last follow-up visit had been collected, including long-cone radiographs (taken at the abutment connection and after years 1, 3, 5, 8, 12 and 16 of loading) and probing data at their last evaluation. General information (medical history, implant data, report on surgery) was retrieved from the patient's file. Two hundred and forty-eight patients had been clinically examined recently. For the others, information on bone level and probing depths were retrieved from the patient's files, as all patients had been enrolled in our annual follow-up schedule. The mean annual bone loss on a site level (without considering the first year of bone remodelling) after 3 years of loading was 0.08 mm/year (SD=0.22, n=1105), after 5 years of loading 0.07 mm/year (SD=0.14, n=892), after 8 years of loading 0.06 mm/year (SD=0.12, n=598), after 12 years 0.04 mm/year (SD=0.07, n=370) and 0.05 mm/year (SD=0.05, n=154) after 16 years of loading. Ongoing bone loss was seen in a number of implants (n=26) with the annual bone loss exceeding 0.2 mm. Some factors clearly showed a significant impact on bone loss: smoking (> or =10 cigarettes/day), GBR, the presence of dehiscence and bone quantity(the latter only during the first year). The probing data showed a favourable condition, with <1.2% of the approximal pockets being > or =6 mm, and 4.1%=5 mm. The mean annual bone loss over the study period was <0.1 mm/year after the first year of loading. However, a small number (2.5%) of the implants showed continuing bone loss.

Parthenocarpy and seed predation by insects in Bursera morelensis.

While parthenocarpy (meaning the production of fruits without seeds) may limit fecundity in many plants, its function is not clear; it has been proposed, however, that it might be associated with a strategy to avoid seed predation. Bursera morelensis is a dioecious endemic plant that produces fruits with and without seeds, and its fruits are parasitized by insects. Its reproductive system is not well described and no published evidence of parthenocarpy exists for the species. The purpose of this work was to describe the breeding system of B. morelensis and its relationship to seed predation by insects. The breeding system was described using pollination experiments, verifying the presence of parthenocarpic fruits and apomictic seeds. Reproductive structures from flower buds to mature fruits were quantified. For fruits, an anatomical and histological characterization was made. The number of fruits in which seeds had been predated by insects was correlated with parthenocarpic fruit production. The major abortion of reproductive structures occurred during fruit set. The results discard the formation of apomictic seeds. Flowers that were not pollinated formed parthenocarpic fruits and these could be distinguished during early developmental stages. In parthenocarpic fruits in the first stages of development, an unusual spread of internal walls of the ovary occurred invading the locule and preventing ovule development. Unlike fruits with seeds, parthenocarpic fruits do not have calcium oxalate crystals in the ovary wall. Both fruit types can be separated in the field at fruit maturity by the presence of dehiscence, complete in seeded and partial in parthenocarpic fruits. Trees with more parthenocarpic fruits had more parasitized fruits. This is the first time the anatomy of parthenocarpic fruits in Burseraceae has been described. Parthenocarpic fruits in B. morelensis might function as a deceit strategy for insect seed predators as they are unprotected both chemically and mechanically by the absence of calcium oxalate crystals.

Uso do adesivo de fibrina na anastomose esôfago-esofágica cervical, em cães

OBJETIVO: Estudar os efeitos da associação do adesivo cirúrgico de fibrina à técnica operatória da invaginação submucosa, em anastomoses esofagianas. MÉTODO: Trinta e dois cães submetidos à anastomose esôfago-esofágica foram alocados em dois grupos: I com sutura em doze pontos e II com sutura em quatro pontos e vedação com adesivo de fibrina. Os animais foram avaliados no sétimo e décimo-quarto dias de pós-operatório. Foram analisados: a evolução ponderal, o índice de estenose, a incidência de deiscências e fístulas, a presença de secreções na tela subcutânea, a presença de líquido intersticial, matriz protêica, celularidade, fibroblastos, fibras de colágeno e concentração de hidroxiprolina. RESULTADOS: O índice de estenose foi menor para os animais do grupo I no sétimo dia de observação. Nos animais do grupo II a incidência de deiscências, secreção serosa e purulenta foram signitivamente maiores aos sete e quatorze dias, enquanto a presença de fístulas foi maior no sétimo dia. Quanto à concentração tecidual de hidroxiprolina não houve diferença estatística entre os grupos. Os fibroblastos e fibras de colágeno tiveram presença mais acentuada no grupo II no décimo-quarto dia. Ocorreram quatro óbitos em animais do grupo II. CONCLUSÕES: A anastomose por invaginação submucosa-mucosa com vedação com adesivo de fibrina apresentou piores resultados que a anastomose convencional de doze pontos circunferenciais.

The correlation between the presence of dehiscence or fenestration and the severity of tooth attrition in contemporary dry Japanese adult skulls--Part I.

The correlation between the presence of dehiscence or fenestration and the severity of tooth attrition in contemporary dry Japanese adult skulls--Part I.