Subhashraj Krishnaraaj | University of Toronto (original) (raw)
Papers by Subhashraj Krishnaraaj
Journal of clinical and experimental dentistry, 2014
Dental impaction is a very frequent problem. Supernumerary teeth, or hyperdontia, are the presenc... more Dental impaction is a very frequent problem. Supernumerary teeth, or hyperdontia, are the presence of additional teeth to the normal series in the either of the dentition. The presence of impacted and/or supernumerary teeth can cause various complications. The objective of the present study was to determine the prevalence of impacted and supernumerary teeth in the North Indian population. The panoramic radiographic records of 4750 patients attending the Department of Oral Medicine and Radiology, Jodhpur Dental College General Hospital between September 2008 to December 2012 were examined for this retrospective study. The ages of the patients ranged from 8 to 72 years, with a mean of 34.6 years. A total of 798 (16.8%) patients presented with 1126 impacted teeth. Impacted canines were the most prevalent (9.7%), followed by impacted premolars (4.3%). Supernumerary teeth (1.6%) and impacted molars (1.2%) were less prevalent. Among the 842 impacted teeth, the most frequently affected tee...
Journal of Orofacial Research, Nov 25, 2021
Medicina oral, patología oral y cirugía bucal, 2008
Cervical necrotizing fasciitis is a rare infection of the fascial planes, which is less common in... more Cervical necrotizing fasciitis is a rare infection of the fascial planes, which is less common in head and neck, because of the rarity and higher vascularity in the region. We reviewed five patients with cervical necrotizing fasciitis of odontogenic infection managed at a teaching hospital at Chennai, India. There were four men and one woman, of whom four patients were diabetic and hypertensive, with a mean age of 53 years. Mandibular molars (periapical or pericoronal abscess) were found to be the source of infection in all of the cases. The treatment involved incision and drainage and debridement. Anti-microbial drugs were given for all the patients, which included cephalosporins, metronidazole and gentamycin. In four patients the wound healed by contracture and one patient required split skin grafting. Due to the smaller extent of the necrosis, better control of the systemic disease and small size of the sample, there was neither a major complication nor death. This paper reminds ...
International Journal of Pediatric Otorhinolaryngology, 2009
Journal of Oral and Maxillofacial Surgery, 2009
This study evaluated the relationship between the status and position of mandibular third molars ... more This study evaluated the relationship between the status and position of mandibular third molars and angle fractures. Materials and Methods: In a total of 2,033 patients with a mandibular fracture, 532 (26%) had angle fractures, and 1,466 (72%) had retained their lower third molars. The most frequent cause for mandibular fracture was road traffic accident (64%), followed by assault (19%). Results: Of 341 patients with an unerupted third molar, mandibular angle fracture was evident in 249 patients (73%). Only 62 patients (9.4%) with a completely erupted third molar had angle fractures, whereas 83 patients (17.6%) with partially erupted third molars had angle fractures. Conclusions: Our study confirmed an increased risk of angle fractures in the presence of a lower third molar, as well as a variable risk for angle fracture, depending on the third molar's position.
Journal of Oral and Maxillofacial Surgery, 2008
Journal of Cranio-Maxillofacial Surgery, 2009
Although benign tumours are thought to be relatively uncommon in the orofacial region, the incide... more Although benign tumours are thought to be relatively uncommon in the orofacial region, the incidence differs according to the country. The purpose of this study was to systematically analyse the incidence of benign tumours of maxillofacial region within the Libyan population. A total of 405 cases of benign tumours reported at the Faculty of Dentistry, Arab Medical Science University, Libyan Arab Jamahiriya between 1991 and 2007 were analysed. Keratocystic odontogenic tumour (35.1%) was the most common. Among the non-odontogenic tumours, there were 85 cases of fibrous and adipose tissue origin (33%), 66 cases of bone tumours (26%), 51 cases of epithelial tumours (20%), 37 cases of vascular origin (14%) and 18 neurogenic (7%). In comparison with other international studies, the incidence of benign tumours of orofacial region is relatively lower in Libyan population. The results of the study were more consistent with those from Turkey than other African and European countries.
Dental Traumatology, 2009
The aim of the study was to establish the level of knowledge on the management of dental trauma a... more The aim of the study was to establish the level of knowledge on the management of dental trauma among physicians at Pondicherry, India. A questionnaire was designed and was given to physicians working in medical colleges or as residents in advanced training programs in medicine in Pondicherry, India. The questionnaire contained a clinical situation of tooth avulsion and various treatment options. Only 5.5% of the medical professionals knew about reimplantation and none knew that the patients' mouth was the best transport medium. 90% of them accepted that they had no knowledge on dental trauma management. As the physicians get an opportunity to attend a case of dental trauma in emergency or private practice, it is vital that they possess sufficient knowledge on primary management of tooth avulsion, before referring to dentists.
Cancer Epidemiology, 2009
The aim of this study was to systematically analyze the clinical presentations of orofacial malig... more The aim of this study was to systematically analyze the clinical presentations of orofacial malignant tumors in a Libyan population over a period of 17 years and compare the results with the reports from other countries. During the study period, tumors of epithelial origin were found in 160 patients (82%), followed by tumors of immune system, 22 (11%) and tumors of mesenchymal origin, 14 (7%). Of the total malignant tumors, 115 were men and 81 were women and the male to female ratio was 1.41:1. Malignant non-odontogenic tumors were seen in 194 patients (99%) and malignant odontogenic tumors were seen in 2 patients (1%). Among the epithelial tumors, squamous cell carcinoma (50.6%) was the most common neoplasm, followed by mucoepidermoid carcinoma (15%) and adenoid cystic carcinoma (8.7%). The incidence of oral malignancy is impressively low with respect to the corresponding levels in other countries in Africa and some European countries.
British Journal of Oral and Maxillofacial Surgery, 2008
We describe the pattern of mandibular fractures in Chennai, and confirm that, as in most other la... more We describe the pattern of mandibular fractures in Chennai, and confirm that, as in most other large cities, the main cause is road traffic accidents.
Medicina oral, patología oral y cirugía bucal, 2009
Schwannoma is an intraoral rare, benign neoplasm derived from the nerve sheath of peripheral nerv... more Schwannoma is an intraoral rare, benign neoplasm derived from the nerve sheath of peripheral nerves. "Ancient schwannoma" shows histopathological features, such as degenerative changes and atypical nuclei, and may easily be confused with malignant neoplasms. Ancient schwannoma of the head and neck region is relatively uncommon and very few cases had been reported in the oral cavity. We present a case of ancient schwannoma arising from the mental nerve in a 19 year old male which was of eight months duration. Examination revealed a 30 x 25 mm firm, strawberry-like mass in the periapical region of the left lower first premolar, extending anteriorly to the canine and posteriorly to the first molar, obliterating the buccal vestibule, with an intact overlying mucosa. Ultrasonography showed that the tumor was closely associated with the mental nerve on the left side, suggestive of a peripheral neural sheath tumor. Complete excision of the lesion was done under local anesthesia, ...
We describe the pattern of mandibular fractures in Chennai, and confirm that, as in most other la... more We describe the pattern of mandibular fractures in Chennai, and confirm that, as in most other large cities, the main cause is road traffic accidents.
Purpose: The aim of this study is to establish the level of knowledge among dental, medical, and ... more Purpose: The aim of this study is to establish the level of knowledge among dental, medical, and paramedical professionals of the hospital, regarding the role of oral and maxillofacial surgery in health care. This study also aims to highlight the perception of the medical professionals and what they think an oral and maxillofacial surgeon does. Materials and Methods: A survey was done at Jawaharlal Institute of Postgraduate Medical and Research Institute, Pondicherry, India, in 2006. Results: The result showed that out of 100, only 41% of the medical students, 76% of the medical practitioners, and 58% of the paramedical workers have heard of the name of the specialty. Conclusion: While the dental professionals realize the scope of the specialty to a larger extent, medical professionals are not fully aware of the expertise the specialty has to offer.
Journal of clinical and experimental dentistry, 2014
Dental impaction is a very frequent problem. Supernumerary teeth, or hyperdontia, are the presenc... more Dental impaction is a very frequent problem. Supernumerary teeth, or hyperdontia, are the presence of additional teeth to the normal series in the either of the dentition. The presence of impacted and/or supernumerary teeth can cause various complications. The objective of the present study was to determine the prevalence of impacted and supernumerary teeth in the North Indian population. The panoramic radiographic records of 4750 patients attending the Department of Oral Medicine and Radiology, Jodhpur Dental College General Hospital between September 2008 to December 2012 were examined for this retrospective study. The ages of the patients ranged from 8 to 72 years, with a mean of 34.6 years. A total of 798 (16.8%) patients presented with 1126 impacted teeth. Impacted canines were the most prevalent (9.7%), followed by impacted premolars (4.3%). Supernumerary teeth (1.6%) and impacted molars (1.2%) were less prevalent. Among the 842 impacted teeth, the most frequently affected tee...
Journal of Orofacial Research, Nov 25, 2021
Medicina oral, patología oral y cirugía bucal, 2008
Cervical necrotizing fasciitis is a rare infection of the fascial planes, which is less common in... more Cervical necrotizing fasciitis is a rare infection of the fascial planes, which is less common in head and neck, because of the rarity and higher vascularity in the region. We reviewed five patients with cervical necrotizing fasciitis of odontogenic infection managed at a teaching hospital at Chennai, India. There were four men and one woman, of whom four patients were diabetic and hypertensive, with a mean age of 53 years. Mandibular molars (periapical or pericoronal abscess) were found to be the source of infection in all of the cases. The treatment involved incision and drainage and debridement. Anti-microbial drugs were given for all the patients, which included cephalosporins, metronidazole and gentamycin. In four patients the wound healed by contracture and one patient required split skin grafting. Due to the smaller extent of the necrosis, better control of the systemic disease and small size of the sample, there was neither a major complication nor death. This paper reminds ...
International Journal of Pediatric Otorhinolaryngology, 2009
Journal of Oral and Maxillofacial Surgery, 2009
This study evaluated the relationship between the status and position of mandibular third molars ... more This study evaluated the relationship between the status and position of mandibular third molars and angle fractures. Materials and Methods: In a total of 2,033 patients with a mandibular fracture, 532 (26%) had angle fractures, and 1,466 (72%) had retained their lower third molars. The most frequent cause for mandibular fracture was road traffic accident (64%), followed by assault (19%). Results: Of 341 patients with an unerupted third molar, mandibular angle fracture was evident in 249 patients (73%). Only 62 patients (9.4%) with a completely erupted third molar had angle fractures, whereas 83 patients (17.6%) with partially erupted third molars had angle fractures. Conclusions: Our study confirmed an increased risk of angle fractures in the presence of a lower third molar, as well as a variable risk for angle fracture, depending on the third molar's position.
Journal of Oral and Maxillofacial Surgery, 2008
Journal of Cranio-Maxillofacial Surgery, 2009
Although benign tumours are thought to be relatively uncommon in the orofacial region, the incide... more Although benign tumours are thought to be relatively uncommon in the orofacial region, the incidence differs according to the country. The purpose of this study was to systematically analyse the incidence of benign tumours of maxillofacial region within the Libyan population. A total of 405 cases of benign tumours reported at the Faculty of Dentistry, Arab Medical Science University, Libyan Arab Jamahiriya between 1991 and 2007 were analysed. Keratocystic odontogenic tumour (35.1%) was the most common. Among the non-odontogenic tumours, there were 85 cases of fibrous and adipose tissue origin (33%), 66 cases of bone tumours (26%), 51 cases of epithelial tumours (20%), 37 cases of vascular origin (14%) and 18 neurogenic (7%). In comparison with other international studies, the incidence of benign tumours of orofacial region is relatively lower in Libyan population. The results of the study were more consistent with those from Turkey than other African and European countries.
Dental Traumatology, 2009
The aim of the study was to establish the level of knowledge on the management of dental trauma a... more The aim of the study was to establish the level of knowledge on the management of dental trauma among physicians at Pondicherry, India. A questionnaire was designed and was given to physicians working in medical colleges or as residents in advanced training programs in medicine in Pondicherry, India. The questionnaire contained a clinical situation of tooth avulsion and various treatment options. Only 5.5% of the medical professionals knew about reimplantation and none knew that the patients' mouth was the best transport medium. 90% of them accepted that they had no knowledge on dental trauma management. As the physicians get an opportunity to attend a case of dental trauma in emergency or private practice, it is vital that they possess sufficient knowledge on primary management of tooth avulsion, before referring to dentists.
Cancer Epidemiology, 2009
The aim of this study was to systematically analyze the clinical presentations of orofacial malig... more The aim of this study was to systematically analyze the clinical presentations of orofacial malignant tumors in a Libyan population over a period of 17 years and compare the results with the reports from other countries. During the study period, tumors of epithelial origin were found in 160 patients (82%), followed by tumors of immune system, 22 (11%) and tumors of mesenchymal origin, 14 (7%). Of the total malignant tumors, 115 were men and 81 were women and the male to female ratio was 1.41:1. Malignant non-odontogenic tumors were seen in 194 patients (99%) and malignant odontogenic tumors were seen in 2 patients (1%). Among the epithelial tumors, squamous cell carcinoma (50.6%) was the most common neoplasm, followed by mucoepidermoid carcinoma (15%) and adenoid cystic carcinoma (8.7%). The incidence of oral malignancy is impressively low with respect to the corresponding levels in other countries in Africa and some European countries.
British Journal of Oral and Maxillofacial Surgery, 2008
We describe the pattern of mandibular fractures in Chennai, and confirm that, as in most other la... more We describe the pattern of mandibular fractures in Chennai, and confirm that, as in most other large cities, the main cause is road traffic accidents.
Medicina oral, patología oral y cirugía bucal, 2009
Schwannoma is an intraoral rare, benign neoplasm derived from the nerve sheath of peripheral nerv... more Schwannoma is an intraoral rare, benign neoplasm derived from the nerve sheath of peripheral nerves. "Ancient schwannoma" shows histopathological features, such as degenerative changes and atypical nuclei, and may easily be confused with malignant neoplasms. Ancient schwannoma of the head and neck region is relatively uncommon and very few cases had been reported in the oral cavity. We present a case of ancient schwannoma arising from the mental nerve in a 19 year old male which was of eight months duration. Examination revealed a 30 x 25 mm firm, strawberry-like mass in the periapical region of the left lower first premolar, extending anteriorly to the canine and posteriorly to the first molar, obliterating the buccal vestibule, with an intact overlying mucosa. Ultrasonography showed that the tumor was closely associated with the mental nerve on the left side, suggestive of a peripheral neural sheath tumor. Complete excision of the lesion was done under local anesthesia, ...
We describe the pattern of mandibular fractures in Chennai, and confirm that, as in most other la... more We describe the pattern of mandibular fractures in Chennai, and confirm that, as in most other large cities, the main cause is road traffic accidents.
Purpose: The aim of this study is to establish the level of knowledge among dental, medical, and ... more Purpose: The aim of this study is to establish the level of knowledge among dental, medical, and paramedical professionals of the hospital, regarding the role of oral and maxillofacial surgery in health care. This study also aims to highlight the perception of the medical professionals and what they think an oral and maxillofacial surgeon does. Materials and Methods: A survey was done at Jawaharlal Institute of Postgraduate Medical and Research Institute, Pondicherry, India, in 2006. Results: The result showed that out of 100, only 41% of the medical students, 76% of the medical practitioners, and 58% of the paramedical workers have heard of the name of the specialty. Conclusion: While the dental professionals realize the scope of the specialty to a larger extent, medical professionals are not fully aware of the expertise the specialty has to offer.
Oral health is linked to general health and quality of life in children. The impact of oral disea... more Oral health is linked to general health and quality of life in children. The impact of oral diseases on children is reflected in their days lost at school, difficulty with eating, reduced self-esteem, poor quality of life, among other consequences 11 . Parental oral health-related knowledge, belief, and attitudes influence the tooth-brushing behaviour of their children. The aim of the study was to assess the caregiver's knowledge, attitude and behaviour of dental hygiene, brushing habits, cavities, baby teeth and fluoride.