Evaluation of crestal bone resorption around cylindrical and conical implants following 6 months of loading: A randomized clinical trial

ABSTRACT Objective: The purpose of this clinical study was to evaluate the effect of implant body form (cylindrical and conical implants) on crestal bone levels during 6 months' follow-up after loading. Materials and Methods: A total of 32 SPI implants (19 conical implants/13 cylindrical implants) were randomly placed in 12 male patients using a submerged approach. None of the patients had compromising medical conditions or parafunctional habits. Periapical radiographs using the parallel technique were taken after clinical loading and 6 months later. Clinical indices including pocket depth and bleeding on probing (BOP) were recorded on 6-month follow-up. Data were analyzed by independent samples t-test and Chi-square test with a significance level of 0.05. Results: Six months after loading, crestal bone loss was 0.84 (±0.29) mm around the cylindrical implants and 0.73 (±0.62) mm around the conical types, which was not significantly different (P = 0.54). Pocket depth around the cylindrical and conical implants was 2.61 (±0.45) mm and 2.36 (±0.44) mm, respectively (P = 0.13). BOP was observed among 53.8% and 47.4% of the cylindrical implants and conical (P = 0.13). Bone loss and pocket depth in the maxilla and mandible had no significant difference (P = 0.46 and P = 0.09, respectively). Conclusion: In this study, although bone loss and clinical parameters were slightly higher in the cylindrical implants, there was no significant difference between the conical- and cylindrical-shaped implants.

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Resorbable Collagen Barrier Impeding the Extrusion of Obturating Material in Primary Molars Undergoing Resorption – A Randomized Clinical Trial

Journal of Clinical Pediatric Dentistry ◽

10.17796/1053-4625-45.5.4 ◽

2021 ◽

Vol 45 (5) ◽

pp. 312-316

Author(s):

Mishra Neha Sanjeev ◽

Harsimran Kaur ◽

Sandeep Singh Mayall ◽

Rishika ◽

Ramakrishna Yeluri

Keyword(s):

Test Group ◽

Primary Molars ◽

Control Group ◽

Chi Square ◽

Significance Level ◽

Significant Difference ◽

Chi Square Test ◽

Group A ◽

Group B ◽

And Control

Objective: To evaluate the effectiveness of placing a resorbable collagen barrier in impeding the extrusion of obturation material in primary molars undergoing resorption. Study design: All the 94 canals in 47 mandibular molars were allocated to 2 groups- Group ‘A’- 47 canals with collagen barrier (Test group) and Group ‘B’- 47 canals without collagen barrier (Control group) based on randomization protocol. Pulpectomy was performed and obturation of both test and control canals were radiographically assessed. Pearson’s chi – square test was applied to analyze the results. The significance level was predetermined at p < 0.05. Results: Among the test group, 93.6% of the canals showed no extrusion while, 6.4% showed visible extrusion of the material outside the apex. In the control group, 83% showed no extrusion whereas 17% of the canals showed visible extrusion outside the apex. But no significant difference was noted (p>0.05). Conclusion: The placement of resorbable collagen barrier in the apical third of the canal prevented the extrusion of obturating material beyond the apex in resorbing primary molars.

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Position of lips and tongue in rest in newborns with and without ankyloglossia

CoDAS ◽

10.1590/2317-1782/20202020069 ◽

2021 ◽

Vol 33 (6) ◽

Author(s):

Silvia Márcia Andrade Campanha ◽

Roberta Lopes de Castro Martinelli ◽

Durval Batista Palhares

Keyword(s):

Visual Inspection ◽

Cross Sectional Study ◽

University Hospital ◽

Sectional Study ◽

Hospital Data ◽

Chi Square ◽

Cross Sectional ◽

Significance Level ◽

Significant Difference ◽

Chi Square Test

ABSTRACT Purpose Verify the position of lips and tongue at rest in newborns with and without ankyloglossia. Methods Cross-sectional study, carried out with 130 newborns in University Hospital. Data collection was performed by the researcher and speech-language pathologists from the Hospital. Information on gestational age, sex, weight, height and days of life was collected. The position of the lips and tongue at rest was evaluated through visual inspection with the newborns asleep. After the newborns were awakened, Neonatal Screening of the validated Protocol for the evaluation of the lingual frenulum for infants was performed to detect the alteration of the lingual frenulum. The data obtained were described and submitted to statistical analysis using the Chi-Square test to verify the association between the position of the lips with the tongue and to compare the position of the lips and tongue with and without ankyloglossia. The Mann-Whitney test was used to verify the behavior of the variables the differed between newborns with and without ankyloglossia. The significance level of 5% was adopted. Results When comparing the data, a significant difference was found between: weight and height with and without ankyloglossia; position of lips and tongue. An association between the position of the tongue and lips with and without ankyloglossia was also found. Conclusion Newborns without alteration of the lingual frenulum have a tendency to remain with their lips closed and their tongue elevated during rest and newborns with ankyloglossia have a tendency to keep their lips parted and their tongue low during rest.

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Profile and follow-up of patients with tuberculosis in a priority city in Brazil

Revista de Saúde Pública ◽

10.1590/s0034-8910.2015049005304 ◽

2015 ◽

Vol 49 (0) ◽

Cited By ~ 2

Author(s):

Jisleny da Cruz Pereira ◽

Marcio Roberto Silva ◽

Ronaldo Rodrigues da Costa ◽

Mark Drew Crosland Guimarães ◽

Isabel Cristina Gonçalves Leite

Keyword(s):

Surveillance System ◽

Reporting System ◽

Southeastern Brazil ◽

Chi Square ◽

Significance Level ◽

Treatment Default ◽

Chi Square Test ◽

Return Visits ◽

The Impact

OBJECTIVE To analyze the cases of tuberculosis and the impact of direct follow-up on the assessment of treatment outcomes.METHODS This open prospective cohort study evaluated 504 cases of tuberculosis reported in the Sistema de Informação de Agravos de Notificação (SINAN – Notifiable Diseases Information System) in Juiz de Fora, MG, Southeastern Brazil, between 2008 and 2009. The incidence of treatment outcomes was compared between a group of patients diagnosed with tuberculosis and directly followed up by monthly consultations during return visits (287) and a patient group for which the information was indirectly collected (217) through the city’s surveillance system. The Chi-square test was used to compare the percentages, with a significance level of 0.05. The relative risk (RR) was used to evaluate the differences in the incidence rate of each type of treatment outcome between the two groups.RESULTS Of the outcomes directly and indirectly evaluated, 18.5% and 3.2% corresponded to treatment default and 3.8% and 0.5% corresponded to treatment failure, respectively. The incidence of treatment default and failure was higher in the group with direct follow-up (p < 0.05) (RR = 5.72, 95%CI 2.65;12.34, and RR = 8.31, 95%CI 1.08;63.92, respectively).CONCLUSIONS A higher incidence of treatment default and failure was observed in the directly followed up group, and most of these cases were neglected by the disease reporting system. Therefore, effective measures are needed to improve the control of tuberculosis and data quality.

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Assessment of first molars sagittal and rotational position in Class II, division 1 malocclusion

Dental Press Journal of Orthodontics ◽

10.1590/s2176-94512013000600016 ◽

2013 ◽

Vol 18 (6) ◽

pp. 106-111 ◽

Cited By ~ 1

Author(s):

Paulo Estevão Scanavini ◽

Renata Pilli Jóias ◽

Maria Helena Ferreira Vasconcelos ◽

Marco Antonio Scanavini ◽

Luiz Renato Paranhos

Keyword(s):

Class Ii ◽

Chi Square ◽

Mean Values ◽

Significance Level ◽

Significant Difference ◽

Division 1 ◽

Chi Square Test ◽

Student’S T ◽

The Right ◽

Class Ii Division 1

OBJECTIVE: This study assessed the anterior-posterior positioning of the upper and lower first molars, and the degree of rotation of the upper first molars in individuals with Class II, division 1, malocclusion. METHODS: Asymmetry I, an accurate device, was used to assess sixty sets of dental casts from 27 females and 33 males, aged between 12 and 21 years old, with bilateral Class II, division 1. The sagittal position of the molars was determined by positioning the casts onto the device, considering the midpalatal suture as a symmetry reference, and then measuring the distance between the mesial marginal ridge of the most distal molar and the mesial marginal ridge of its counterpart. With regard to the degree of rotation of the upper molar, the distance between landmarks on the mesial marginal ridge was measured. Chi-square test with a 5% significance level was used to verify the variation in molars position. Student's t test at 5% significance was used for statistical analysis. RESULTS: A great number of lower molars mesially positioned was registered, and the comparison between the right and left sides also demonstrated a higher number of mesially positioned molars on the right side of both arches. The average rotation of the molars was found to be 0.76 mm and 0.93 mm for the right and left sides, respectively. CONCLUSION: No statistically significant difference was detected between the mean values of molars mesialization regardless of the side and arch. Molars rotation, measured in millimeters, represented ¼ of Class II.

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Primary stability achieved during implant surgery and bone loss at recovery in patients of a private dental institution — A retrospective analysis

International Journal of Research in Pharmaceutical Sciences ◽

10.26452/ijrps.v11ispl3.2943 ◽

2020 ◽

Vol 11 (SPL3) ◽

pp. 353-357

Author(s):

Shebi S ◽

Suresh

Keyword(s):

Bone Loss ◽

Critical Role ◽

Primary Stability ◽

P Value ◽

Chi Square ◽

Implant Surgery ◽

South Indian ◽

Crestal Bone Loss ◽

Chi Square Test ◽

Mechanical Attachment

Implant stability plays a critical role for osseointegration, without osseointegration long term success cannot be achieved, primary stability occurs from mechanical attachment with the cortical bone. It is the gold standard for success of implants. This is a descriptive clinical study carried out in saveetha dental college and hospital, Poonamallee, Chennai. All the patients who underwent single or two-unit implant surgery were selected. The study setting was done from university predominantly south Indian populations and data with regard to primary stability at placement, level of the implant with bone, crestal bone loss at stage 2 recovery were retrieved from the digital case sheets. Data were entered using SPSS software, and Chi-square test was used for inferential analysis, with a P-value < 0.05 was said to be statistically significant. The results obtained indicate more implants are placed with primary stability in 30-40 Ncm(49.8%). More frequently placed crestal relation is equi crestal region (84.4%) and crestal bone loss was less than 1-2mm is seen(87.3%) at stage 2 recovery. The results were subjected to statistical chi-square test, and it is observed that primary stability at 30-40 Ncm or greater did not have any significant association with crestal bone loss. An equi crestal placement of the implant was preferred irrespective of implant type.

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Treatment of Full and Partial Arches with Internal-Conical-Connection Dental Implants: Clinical Results after 5 Years of Follow-Up

Applied Sciences ◽

10.3390/app10238709 ◽

2020 ◽

Vol 10 (23) ◽

pp. 8709

Author(s):

Diego Lops ◽

Riccardo Guazzo ◽

Alessandro Rossi ◽

Antonino Palazzolo ◽

Vittorio Favero ◽

...

Keyword(s):

Bone Loss ◽

Dental Implants ◽

Clinical Results ◽

Marginal Bone Loss ◽

Significant Difference ◽

Distal Aspect ◽

The Stability ◽

Maxilla And Mandible ◽

Implant Loading

The aim of the present investigation is to evaluate the implant therapy outcomes over a period of 5 years and to analyze several patient risk factors influencing the stability of the peri-implant tissues. Seventy-eight patients were consecutively treated between 2009 and 2017 and restored with implant-supported fixed prostheses. The following inclusion criteria were considered: partial or complete edentulism; residual bone volume of at least 3.3 mm in diameter and 8 mm in length; a favorable relationship between maxilla and mandible; at least a minimum 5 year follow-up for each implant included in the statistical analysis. Intraoral radiographs were taken at implant loading and every 12 months during the follow-up visits. They were subsequently stored on a personal computer and analyzed to determine the changes in bone level. Seventy-eight patients receiving 209 implants completed a minimum follow-up period of 5 years. One-hundred dental implants were inserted in the maxilla while 109 were placed in the mandible. Eleven (14.1%) out of 78 treated patients who received 29 (13.9%) dental implants were considered as drop-outs. On the whole, peri-implantitis was diagnosed in three implants. The average final pocket probing depth at implant level was 2.5 ± 1.2 mm. The average final bone loss after 5 years was 0.3 ± 0.4 mm, both at the mesial and distal aspect of the implant. The effects of the prosthesis type, sex and implant site did not statistically influence the marginal bone loss; on the contrary, a statistically significant difference regarding marginal bone loss was detected between smoker and non-smoker patients (p = 0.021). Implants with internal-conical abutment connection showed stable peri-implant bone levels at the medium-term follow-up. Nevertheless, further prospective long-term clinical studies are necessary to confirm these data.

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Comparison of the crestal bone loss between implant-supported prosthesis with sinus augmentation and distal cantilevered implant-supported prosthesis without sinus augmentation

Journal of Oral Implantology ◽

10.1563/aaid-joi-d-19-00324 ◽

2020 ◽

Author(s):

Ömür Dereci ◽

Emre Mumcu ◽

Yasin Çağlar Koşar ◽

Sadeq Mohammed Taqi Fadhil

Keyword(s):

Bone Loss ◽

Sinus Augmentation ◽

Native Bone ◽

Crestal Bone Loss ◽

Posterior Maxilla ◽

Significant Difference ◽

Group 2 ◽

Xenogenic Bone ◽

Group 1

This study aimed to compare the crestal bone loss between a two implant-supported, non-cantilevered three-unit fixed partial prosthesis (TUFPP) with sinus augmentation and a two implant-supported, distal cantilevered TUFPP without sinus augmentation in the posterior maxilla having insufficient crestal bone. The study subjects were enrolled into two groups. Group 1 included patients with two implants, an anterior implant placed in the native bone and a posterior implant inserted with simultaneous sinus augmentation using a xenogenic bone graft to support a TUFPP, and group 2 included patients with two implants inserted in the native bone to support a distal cantilevered TUFPP. The crestal bone levels at the distal and mesial aspects of each implant were measured at baseline and 6-, 12-, and 24-month follow-up controls on panoramic radiographs. Fifty-two patients and 104 implants were included. There was a significant difference in distal crestal bone loss between anterior and posterior implants in group 1 at 6 months (p<0.05), but not at 12 and 24 months (p>0.05). Distal crestal bone loss was significantly increased in group 1 posterior implants compared to the group 2 posterior implants at 6 months (p<0.05). There was no significant difference in mesial bone loss between the anterior and posterior implants in both groups at all follow-up controls (p>0.05). There was also no significant mesial crestal bone loss in relation to the anterior and posterior implants of both groups at all follow-up controls (p>0.05). Non-cantilevered two implant-supported TUFPP with sinus augmentation may have similar medium term crestal bone loss when compared to cantilevered two implant-supported TUFPP without sinus augmentation. Further prospective studies should be designed to compare the performance of the two implant-supported cantilevered TUFPP and two implant-supported TUFPP with sinus augmentation.

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Effect of COVID-19 Pandemic on the Levels of Empathy among Undergraduate Dental Students in Pakistan

European Journal of Dentistry ◽

10.1055/s-0040-1722091 ◽

2020 ◽

Vol 14 (S 01) ◽

pp. S110-S115

Author(s):

Sundas Ghaus ◽

Madiha Abdul Waheed ◽

Shahreen Zahid Khan ◽

Laila Mustafa ◽

Sohaib Siddique ◽

...

Keyword(s):

Dental Students ◽

Cross Sectional Survey ◽

Chi Square ◽

Cross Sectional ◽

Significance Level ◽

Significant Difference ◽

Chi Square Test ◽

Post Hoc ◽

The Impact ◽

One Way Anova

Abstract Objective The purpose of our study is to determine the effect of coronavirus disease 2019 (COVID-19) on the levels of empathy toward patients among undergraduate dental students in Pakistan. Materials and Methods A cross-sectional, survey-based study was conducted at Islamic International Dental College, Islamabad, Pakistan. After taking an informed consent, a validated and pretested Toronto Empathy Questionnaire (TEQ) was distributed amongst the undergraduate dental students at two points, one before the COVID-19 existed, and the other after August 7th, 2020, when the COVID-19 cases dropped in Pakistan. Responses were indicated on a five point Likert Scale. Statistical Analysis A one-way ANOVA (analysis of variance) was used to compare the TEQ scores between the different years of education at the dental school. Difference within the groups was analyzed using the post-hoc Tukey test. Pre- and post-COVID-19 comparison was done using the Chi-square test (significance level p < 0.05). Results A total of 221 out of 260 students in the pre-COVID-19 group, while 210 out of 260 students in the post-COVID-19 group enrolled in the dentistry program participated in the study. Significant difference in the empathy levels was observed in the pre- and post-COVID-19 groups of the same population, i.e., (p < 0.05). The response rate was 85%. Conclusions This study showed an increase in mean empathy scores among the undergraduate dental students after COVID-19, indicating a significant improvement in their empathy levels during the time of COVID-19. It highlights the impact of the pandemic, whereby death and chaos seem to have brought about an improvement in interpersonal harmony.

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Technical-tactical preparation of Austrian judoka at the Austrian national championships and the number of associated injuries

10.31236/osf.io/q23tv ◽

2017 ◽

Author(s):

Michael Handler ◽

Markus Moser ◽

Jose Toca-Herrera ◽

Martin Burtscher

Keyword(s):

Medical Intervention ◽

Medical Doctor ◽

High Rate ◽

Associated Injuries ◽

Chi Square ◽

Significance Level ◽

Medical Interventions ◽

Significant Difference ◽

Chi Square Test ◽

The Difference

Background & study aimThe first Austrian Judo championships took place in 1947. Since then there hasn’t been any scientific literature about technical, tactical or physical preparation about the participants. In addition, there hasn’t been any trauma statistics of Austrian tournaments either. Some scientific studies describe Judo associated injuries on Olympic or international level, but how gentle is the “gentle way”? Are there any associations between techniques and injuries?Material & methodsIn order to perform this research audiovisual records of the “care system” of all medal fights during the Austrian Judo championships of 2014 and 2015 were analyzed. For 2014 the judo associated injuries were classified by video analysis by a medical doctor. For 2015 they were documented by medical doctors who treated the injuries during the competition time (mat doctors). SPSS was used for statistics. The significance level for the difference of the number of medical intervention dependent on the sex of the fighter was determined at p<0,1 by Chi-square test. ResultsThe number of fight interruptions because due to injuries for men and women was analyzed. They were 15 out of 84 for men and 4 out of 54 for women. The Chi-square value (p<0.1) showed significant difference. The percentage of injuries were 18% for men and 7% for women, respectively. Bronze medal fights needed more medical interventions than gold ones.ConclusionIt seems that gender determines the fighting style and also the risk of an injury. The high rate of hand and finger injuries shows the importance of the grip fight.

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Disparities among pediatric hospital admissions according to gender

International Journal of Scientific Reports ◽

10.18203/issn.2454-2156.intjscirep20202642 ◽

2020 ◽

Vol 6 (7) ◽

pp. 269

Author(s):

Asim Hassan Mehdi ◽

Kinza Riaz ◽

Nimra Ghazal ◽

Nighat Seema Kamran ◽

Erum Saboohi ◽

...

Keyword(s):

Pediatric Patients ◽

Hospital Admissions ◽

Pediatric Hospital ◽

Chi Square ◽

Pediatric Ward ◽

Paediatric Hospital ◽

Medical College ◽

Significant Difference ◽

Chi Square Test ◽

Male Patients

Background: The objective of the study was to determine the pattern of disparities among paediatric hospital admissions according to gender.Methods: This retrospective observational study was done at pediatric ward of Al-Tibri Medical College and Hospital Karachi from June 2018 to May 2019. Pediatric patients below 12 years of age admitted to the pediatric ward of the hospital were included while patients who were admitted for less than 24 hours, refused for consent by parent/guardian, surgical or ICU pediatric patients were excluded. SPSS was used for data analysis. Quantitative data included age, gender, diagnosis and seasonal variation, expressed as frequency in percentages and chi-square test was applied to test for significance. Results: Among 734 pediatric hospital admissions, 423 (58%) were males and 311 (42%) females. Highest percentages of pediatric admission in both genders were infants after which second most patients were from the 1-4 years group in both genders (p=0.01). 215 patients of acute gastroenteritis were male while 142 females. Among patients admitted with respiratory disease, 56 were males while 48 were females. 52 male patients were admitted with viral fever while 34 patients admitted were females (p=0.01).Conclusions: Our study reported a significant difference among gender variances in pediatric hospital admissions. Overall, not only males were predominant in admission to pediatric wards, they were also found to be predominant in disease categorization. Further studies set to determine the reasons behind such gender differences would help in determining plans accordingly to improve outcome of diseases.

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