Newell W. Johnson

ORCID: 0000-0001-5866-262X
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About
Contact & Profiles
Research Areas
  • Oral Health Pathology and Treatment
  • Head and Neck Cancer Studies
  • Oral microbiology and periodontitis research
  • Dental Health and Care Utilization
  • HIV/AIDS oral health manifestations
  • Oral and Maxillofacial Pathology
  • Oral and gingival health research
  • Minerals Flotation and Separation Techniques
  • Salivary Gland Disorders and Functions
  • Viral-associated cancers and disorders
  • Dental Education, Practice, Research
  • Cleft Lip and Palate Research
  • Mineral Processing and Grinding
  • Dental Radiography and Imaging
  • Dental materials and restorations
  • Cancer Diagnosis and Treatment
  • Dental Erosion and Treatment
  • Dental Research and COVID-19
  • Metal Extraction and Bioleaching
  • Dental Implant Techniques and Outcomes
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Cancer-related Molecular Pathways
  • Cervical Cancer and HPV Research
  • Bone health and treatments
  • Bone and Dental Protein Studies

Griffith University
2015-2024

King's College London
2011-2024

Menzies School of Health Research
2016-2023

Science Health Allied Research Education
2023

University of Sri Jayewardenepura
2023

Gold Coast Health
2021

Ragas Dental College & Hospital
2020-2021

Voluntary Health Services Hospital
2021

University of Hong Kong
2019-2020

The University of Queensland
1999-2020

At a workshop coordinated by the WHO Collaborating Centre for Oral Cancer and Precancer in UK issues related to terminology, definitions classification of oral precancer were discussed an expert group. The consensus views Working Group are presented here. term, ‘potentially malignant disorders’, was recommended refer as it conveys that not all disorders described under this term may transform into cancer. Critically evaluating proposed so far leukoplakia, agreed leukoplakia should be used...

10.1111/j.1600-0714.2007.00582.x article EN Journal of Oral Pathology and Medicine 2007-07-26

10.1111/j.1875-595x.2003.tb00761.x article EN publisher-specific-oa International Dental Journal 2003-10-01

Head and neck cancers (HNCs) continue to remain a significant public health burden worldwide, causing mortality morbidity despite clinical advances enabling their early diagnosis treatment.We used data from the GLOBOCAN 2012, Cancer Incidence in Five Continents, World Health Organization Mortality Database Surveillance, Epidemiology, End Results programmes describe current epidemiology of HNCs.Estimated age-standardised incidence/mortality rates for lip oral cavity among males females...

10.1159/000446117 article EN Oncology 2016-01-01

The mouth and oropharynx are among the ten most common sites affected by cancer worldwide, but global incidence varies widely. Five-year survival rates exceed 50% in only best treatment centers. Causes predominantly lifestyle-related: Tobacco, areca nut, alcohol, poor diet, viral infections, pollution all important etiological factors. Oral is a disease of dispossessed, reducing social inequalities requires national policies co-ordinated with wider health initiatives - risk factor approach:...

10.1177/0022034511402082 article EN Advances in Dental Research 2011-04-13

Studies on the possible association between bacteria and oral squamous cell carcinoma (OSCC) remain inconclusive, largely due to methodological variations/limitations. The objective of this study was characterize species composition as well functional potential bacteriome associated with OSCC. DNA obtained from 20 fresh OSCC biopsies (cases) deep-epithelium swabs (matched control subjects) sequenced for V1-V3 region using Illumina's 2 × 300 bp chemistry. High quality, non-chimeric merged...

10.1038/s41598-017-02079-3 article EN cc-by Scientific Reports 2017-05-08

Results from microbiome studies on oral cancer have been inconsistent, probably because they focused compositional analysis, which does not account for functional redundancy among bacteria. Based prediction, a recent study revealed enrichment of inflammatory bacterial attributes in squamous cell carcinoma (OSCC). Given the high relevance this finding to carcinogenesis, we aimed here corroborate them case-control involving 25 OSCC cases and 27 fibroepithelial polyp (FEP) controls Sri Lanka....

10.1177/0022034518767118 article EN Journal of Dental Research 2018-04-09

A case‐control study on chewing and smoking habits oral submucous fibrosis (OSF) was undertaken in Karachi 1989/90. Cases were patients detected with fibrous bands leathery mucosa hospital‐based controls matched by age sex. Information collected personal interview of 157 cases controls. Despite overall female preponderance, a substantial number young men enlisted. The male/female risks found to be similar. Immigrants from India Pakistan (Mohajir) had similar risk status local Punjabis. No...

10.1111/j.1600-0714.1994.tb00258.x article EN Journal of Oral Pathology and Medicine 1994-02-01

Background: This case–control study aimed to identify the risk factors for oral cancer in patients aged 45 years and under. Methods: Patients were recruited over a 3‐year period between 1999 2001 from 14 hospitals southeast of England, UK. Results: Fifty‐three (80%) newly diagnosed with squamous cell carcinoma (SCC) cavity participated. The mean age cases at diagnosis was 38.5 (SD = 7.0) 53% male. interviewed about main tobacco, alcohol, cannabis their consumption fresh fruit vegetables...

10.1111/j.1600-0714.2004.00222.x article EN Journal of Oral Pathology and Medicine 2004-09-10
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