Ronaldo Lira-Junior

Ronaldo Lira-Junior


Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 January 2020 in Brazilian Oral Research
Verified
Journal Article
Open access
PDF file
RFRicardo Guimarães Fischer
Ricardo Guimarães Fischer
RLRonaldo Lira-Junior
Ronaldo Lira-Junior
Belen Retamal-ValdesBelen Retamal-Valdes
Belen Retamal-Valdes
LFLuciene Cristina Figueiredo
Luciene Cristina Figueiredo
ZMZilson Malheiros
Zilson Malheiros
MFMagda Feres
Magda Feres
Gingivitis and periodontitis are associated with a negative impact on Oral Health Related Quality of Life (OHRQoL), exerting a significant influence on aspects related to the patients' function and esthetics. Periodontitis has been associated with several systemic conditions, including adverse pregnancy outcomes, cardiovascular diseases, type 2 diabetes mellitus (DM), respiratory disorders, fatal pneumonia in hemodialysis patients, chronic renal disease and metabolic syndrome. The aim of this paper was to review the results of different periodontal treatments and their impacts on patients' OHRQoL and systemic health. Non-surgical and surgical periodontal treatments are predictable procedures in terms of controlling infection, reducing probing pocket depth and gaining clinical attachment. In addition, the treatment of periodontitis may significantly improve OHRQoL and promote a reduction in the levels of systemic markers of inflammation, including some cytokines associated with cardiovascular diseases. Studies have also suggested that periodontal treatment may improve glycemic control in patients with DM. Strategies and actions for preventing the onset and recurrence of periodontitis, and the challenges facing the field of periodontology in the XXI century are presented in this review.

1 January 2016 in World Journal of Gastroenterology
Verified
Journal Article
Open access
RLRonaldo Lira-Junior
Ronaldo Lira-Junior
Carlos Marcelo FigueredoCarlos Marcelo Figueredo
Carlos Marcelo Figueredo
Periodontal disease and inflammatory bowel disease (IBD) are both chronic inflammatory diseases. Their pathogenesis is mediated by a complex interplay between a dysbiotic microbiota and the host immune-inflammatory response, and both are influenced by genetic and environmental factors. This review aimed to provide an overview of the evidence dealing with a possible pathogenic interaction between periodontal disease and IBD. There seems to be an increased prevalence of periodontal disease in patients with IBD when compared to healthy controls, probably due to changes in the oral microbiota and a higher inflammatory response. Moreover, the induction of periodontitis seems to result in gut dysbiosis and altered gut epithelial cell barrier function, which might contribute to the pathogenesis of IBD. Considering the complexity of both periodontal disease and IBD, it is very challenging to understand the possible pathways involved in their coexistence. In conclusion, this review points to a complex pathogenic interaction between periodontal disease and IBD, in which one disease might alter the composition of the microbiota and increase the inflammatory response related to the other. However, we still need more data derived from human studies to confirm results from murine models. Thus, mechanistic studies are definitely warranted to clarify this possible bidirectional association.

9 July 2014 in Journal of Clinical Periodontology
Verified
Journal Article
Closed access
PDF file
ACAndré Luis Caúla
André Luis Caúla
RLRonaldo Lira-Junior
Ronaldo Lira-Junior
ETEduardo Muniz Barretto Tinoco
Eduardo Muniz Barretto Tinoco
RFRicardo Guimarães Fischer
Ricardo Guimarães Fischer

22 December 2015 in PLOS ONE
Verified
Journal Article
Open access
PDF file
CSCaroline Moura Martins Lobo Santos
Caroline Moura Martins Lobo Santos
RLRonaldo Lira-Junior
Ronaldo Lira-Junior
RFRicardo Guimarães Fischer
Ricardo Guimarães Fischer
ASAna Paula Pires dos Santos
Ana Paula Pires dos Santos
BOBranca Heloisa Oliveira
Branca Heloisa Oliveira
To evaluate the effects of systemic antibiotics in combination with scaling and root planing (SRP) on periodontal parameters, tooth loss and oral health-related quality of life in diabetes patients. Two independent reviewers screened for controlled clinical trials with at least 6-month follow-up in six electronic databases, registers of clinical trials, meeting abstracts and four major dental journals. After duplicates removal, electronic and hand searches yielded 1,878 records; 18 full-text articles were independently read by two reviewers. To evaluate the additional effect of antibiotic usage, pooled weighted mean differences and 95% confidence intervals were calculated using a fixed effects model. Five studies met the inclusion criteria, four of which were included in meta-analyses. The meta-analyses showed a significant effect favouring SRP plus antibiotic for reductions in mean probing depth (PD) (-0.22 mm [-0.34, -0.11]) and mean percentage of bleeding on probing (BoP) (4% [-7, -1]). There was no significant effect for clinical attachment level gain and plaque index reduction. No study reported on tooth loss and oral health-related quality of life. Adjunctive systemic antibiotic use in diabetic patients provides a small additional benefit in terms of reductions in mean PD and mean percentage of BoP. PROSPERO: CRD42013006389.

1 December 2014 in Journal of Periodontology
Verified
Journal Article
Closed access
PDF file
RLRonaldo Lira-Junior
Ronaldo Lira-Junior
Carlos Marcelo FigueredoCarlos Marcelo Figueredo
Carlos Marcelo Figueredo
EBEliete Bouskela
Eliete Bouskela
RFRicardo Guimarães Fischer
Ricardo Guimarães Fischer
Background: Periodontitis is an inflammatory chronic disease that has been implicated as a risk factor for cardiovascular disease (CVD). Endothelium has a central role in CVD pathogenesis, and chronic inflammation can make it dysfunctional, contributing to CVD emergence. Thus, the aim of this study is to investigate the existence of an association between severe chronic periodontitis (CP) and nailfold microvascular, gingival microvascular, and endothelial functions.Methods: Twenty‐three patients were included, 13 with severe periodontitis (median age, 46 years; interquartile range, 9.5 years) and 10 healthy control patients (median age, 35.5 years; interquartile range, 12.5 years). Clinical and laboratorial variables were gathered, and patients were examined by the following: 1) nailfold videocapillaroscopy to assess functional capillary density (FCD), capillary diameters, red blood cell velocity at rest (RBCV) and after 1‐minute arterial occlusion (RBCVmax), and time taken to reach RBCVmax (TRBCVmax); 2) side‐stream dark‐field imaging to determine gingival capillary density (GCD); and 3) venous occlusion plethysmography to assess endothelium‐dependent (% Hyper) and endothelium‐independent vasodilatation (% Nitro).Results: Patients with CP have smaller values for FCD, RBCV, RBCVmax, and % Hyper and higher values for TRBCVmax and GCD compared with controls (P <0.05). There were significant correlations between periodontal parameters with FCD, RBCV, RBCVmax, TRBCVmax, GCD, and % Hyper. There was also a negative correlation between FCD and GCD (r = −0.7; P <0.01). Associations between periodontitis and FCD, RBCVmax, TRBCVmax, GCD, and % Hyper remained significant after adjustments for age and systolic blood pressure.Conclusion: Severe CP was directly associated with endothelial and microvascular dysfunctions.

1 June 2016 in Archives of Oral Biology
Verified
Journal Article
Closed access
JMJuliana Santos Bittencourt Menegat
Juliana Santos Bittencourt Menegat
RLRonaldo Lira-Junior
Ronaldo Lira-Junior
MSMariana Alves Siqueira
Mariana Alves Siqueira
FBFernanda Brito
Fernanda Brito
ACAna Teresa Pugas Carvalho
Ana Teresa Pugas Carvalho
Carlos Marcelo FigueredoCarlos Marcelo Figueredo
Carlos Marcelo Figueredo