Journal of Umm Al-Qura University for Medical Sciences
Introduction: Non-surgical endodontic retreatment is highly dependent on the removal of previous ... more Introduction: Non-surgical endodontic retreatment is highly dependent on the removal of previous root filling material, bacteria and necrotic tissue. Various techniques and instruments have been used for endodontic retreatment. Recently, the XP-endo Finisher has been introduced in endodontic treatment to clean highly complex morphologies and difficult to reach areas. Aims: a) To compare the effectiveness of XP-endo Finisher and ProTaper universal retreatment system with or without organic solvent in removing gutta-percha. b) To compare the amount of apically extruded debris between the groups. Methods: 24-human- extracted, single-rooted teeth were divided into three groups of 8. The groups were classified as follows: Group I: using a ProTaper universal retreatment system with chloroform. Group II: using a ProTaper universal retreatment system without chloroform. Group III: using a ProTaper universal retreatment system followed by XP-endo Finisher without chloroform. The apically ext...
Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result,... more Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result, marginal leakage in conjunction with bonded restorations is greatly reduced, however true adhesive restorative materials do not exist at present, and the bonding is due to micromechanical retention of the resinous material to the tooth. As some endodontic sealing materials have high bond strength to dentin but may suffer from solubility and improper sealing ability. Consequently, evaluation of some properties of these materials may be advantageous for proper selection of which type to be used. Aim: The aim of this study was to evaluate the sealing capacity and the bond strength of two different types of root canal sealing materials. Methodology: A total of 20 single-rooted human mandibular premolar teeth with single canals were instrumented using step back technique. The prepared canals were obturated with lateral compaction technique using gutta percha and two different types of sealer...
Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion impl... more Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion implantation (PIII) and Nd:YAG laser, on topographical morphology and texture of Ti-alloy implants and consequently their osseointegration. Materials & Methods: Fifteen Ti-6%Al-4%V cylindrical root shaped samples were divided into three groups. Group I (Control): received no surface treatment, Group II: treated by PIII and Group III: subjected to Nd:YAG laser. The sterilized implants were inserted into Mongrel dogs’ femur for 6 months before animals scarification. Implants within bone blocks were used for histological assessment of the newly formed bone. For histomorphometric analysis, bone-to-implant contact (BIC %) was calculated. The collected data were statistically analyzed. Results: SEM of Group I showed regular parallel lines of cutting and polishing. Group II showed parallel homogenous straie of highly polished surface. Group III exhibited sealed machining and polishing marks due to ...
Objective: The present work evaluated histologically and immunohistochemically the expression of ... more Objective: The present work evaluated histologically and immunohistochemically the expression of leptin during healing of the incisional oral mucosal wound in diabetic rats as compared to healthy rats. Methods: Twenty-four adult male Sprague–Dawley rats weighing on average 150–200 g were allocated equally into two groups: Group I (control) and Group II (diabetic). Diabetes was induced by a single intraperitoneal injection of streptozotocin dissolved in distilled water. Each animal received experimental incision in buccal mucosa and sutured, and the specimens were collected from the buccal mucosa of each animal at intervals of 7, 14, and 21 days and routinely processed for H and E and immunohistochemical staining for leptin. All measurement data were calculated as a mean ± standard deviation. Results: Leptin expression was observed in the epithelium and the vascular endothelial cells in both groups. In both the control and diabetic groups, the expression of leptin was significantly i...
Background: Down syndrome is a genetic alteration that the affected individuals carry an extra ch... more Background: Down syndrome is a genetic alteration that the affected individuals carry an extra chromosome 21. These individuals have mental, physical and chronic medical conditions that require health care than normal individuals. There is a unique combination of dentofacial anomalies in Down syndrome individuals. All these factors and in addition to the lack of manual dexterity could compromise their adequate oral cleaning. Thus, these children are prone to various oral diseases that require early detection and treatment. Objectives: The aim of the study was to determine the prevalence of some selected oral and dental anomalies in Down syndrome children in Makkah and Jeddah, Saudi Arabia. Subjects and Methods: A sample of fifty Down syndrome (group I) Saudi children, age ranging between 4-14 years was subjected to an intraoral examination for some selected oral and dental anomalies. The control group (group II) includes fifty Saudi healthy children of both genders with matching age...
Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result,... more Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result, marginal leakage in conjunction with bonded restorations is greatly reduced, however true adhesive restorative materials do not exist at present, and the bonding is due to micromechanical retention of the resinous material to the tooth. As some endodontic sealing materials have high bond strength to dentin but may suffer from solubility and improper sealing ability. Consequently, evaluation of some properties of these materials may be advantageous for proper selection of which type to be used. Aim: The aim of this study was to evaluate the sealing capacity and the bond strength of two different types of root canal sealing materials. Methodology: A total of 20 single-rooted human mandibular premolar teeth with single canals were instrumented using step back technique. The prepared canals were obturated with lateral compaction technique using gutta percha and two different types of sealer...
Objectives: To study the prevalence of some selected oral and dental anomalies in mentally retard... more Objectives: To study the prevalence of some selected oral and dental anomalies in mentally retarded children in Makkah community. Subjects and Methods: A sample of two hundreds mentally retardedSaudi children, age ranging between 4 and 13 years, was subjected to an intraoral examination for some selected oral and dental anomalies. Out of the 200 children, 84 had Down’s syndrome (group I) and 116 had non syndromic mental retardation (group II). The findings were determined and compared to those of two hundreds healthy children (group III) using the appropriate statistical descriptive analysis. Results: All the mentally retarded children had at least one of the selected oral and dental anomalies. The prevalence of the selected oral and dental anomalies was 100%, 42% and 1% in group I, II, III respectively. Narrow high arched palate was the most prevalent anomaly in group I and III while microdontia was the most prevalent anomaly in group II. Conclusion: The findings of this study show...
Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion impl... more Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion implantation (PIII) and Nd:YAG laser, on topographical morphology and texture of Ti-alloy implants and consequently their osseointegration. Materials & Methods: Fifteen Ti-6%Al-4%V cylindrical root shaped samples were divided into three groups. Group I (Control): received no surface treatment, Group II: treated by PIII and Group III: subjected to Nd:YAG laser. The sterilized implants were inserted into Mongrel dogs' femur for 6 months before animals scarification. Implants within bone blocks were used for histological assessment of the newly formed bone. For histomorphometric analysis, bone-to-implant contact (BIC %) was calculated. The collected data were statistically analyzed. Results: SEM of Group I showed regular parallel lines of cutting and polishing. Group II showed parallel homogenous straie of highly polished surface. Group III exhibited sealed machining and polishing marks due...
The present work evaluated histologically and immunohistochemically the expression of leptin duri... more The present work evaluated histologically and immunohistochemically the expression of leptin during healing of the incisional oral mucosal wound in diabetic rats as compared to healthy rats. Twenty-four adult male Sprague-Dawley rats weighing on average 150-200 g were allocated equally into two groups: Group I (control) and Group II (diabetic). Diabetes was induced by a single intraperitoneal injection of streptozotocin dissolved in distilled water. Each animal received experimental incision in buccal mucosa and sutured, and the specimens were collected from the buccal mucosa of each animal at intervals of 7, 14, and 21 days and routinely processed for H and E and immunohistochemical staining for leptin. All measurement data were calculated as a mean ± standard deviation. Leptin expression was observed in the epithelium and the vascular endothelial cells in both groups. In both the control and diabetic groups, the expression of leptin was significantly increased with time, and there...
Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion impl... more Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion implantation (PIII) and Nd:YAG laser, on topographical morphology and texture of Ti-alloy implants and consequently their osseointegration. Materials & Methods: Fifteen Ti-6%Al-4%V cylindrical root shaped samples were divided into three groups. Group I (Control): received no surface treatment, Group II: treated by PIII and Group III: subjected to Nd:YAG laser. The sterilized implants were inserted into Mongrel dogs' femur for 6 months before animals scarification. Implants within bone blocks were used for histological assessment of the newly formed bone. For histomorphometric analysis, bone-to-implant contact (BIC %) was calculated. The collected data were statistically analyzed. Results: SEM of Group I showed regular parallel lines of cutting and polishing. Group II showed parallel homogenous straie of highly polished surface. Group III exhibited sealed machining and polishing marks due...
Journal of Umm Al-Qura University for Medical Sciences
Introduction: Non-surgical endodontic retreatment is highly dependent on the removal of previous ... more Introduction: Non-surgical endodontic retreatment is highly dependent on the removal of previous root filling material, bacteria and necrotic tissue. Various techniques and instruments have been used for endodontic retreatment. Recently, the XP-endo Finisher has been introduced in endodontic treatment to clean highly complex morphologies and difficult to reach areas. Aims: a) To compare the effectiveness of XP-endo Finisher and ProTaper universal retreatment system with or without organic solvent in removing gutta-percha. b) To compare the amount of apically extruded debris between the groups. Methods: 24-human- extracted, single-rooted teeth were divided into three groups of 8. The groups were classified as follows: Group I: using a ProTaper universal retreatment system with chloroform. Group II: using a ProTaper universal retreatment system without chloroform. Group III: using a ProTaper universal retreatment system followed by XP-endo Finisher without chloroform. The apically ext...
Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result,... more Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result, marginal leakage in conjunction with bonded restorations is greatly reduced, however true adhesive restorative materials do not exist at present, and the bonding is due to micromechanical retention of the resinous material to the tooth. As some endodontic sealing materials have high bond strength to dentin but may suffer from solubility and improper sealing ability. Consequently, evaluation of some properties of these materials may be advantageous for proper selection of which type to be used. Aim: The aim of this study was to evaluate the sealing capacity and the bond strength of two different types of root canal sealing materials. Methodology: A total of 20 single-rooted human mandibular premolar teeth with single canals were instrumented using step back technique. The prepared canals were obturated with lateral compaction technique using gutta percha and two different types of sealer...
Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion impl... more Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion implantation (PIII) and Nd:YAG laser, on topographical morphology and texture of Ti-alloy implants and consequently their osseointegration. Materials & Methods: Fifteen Ti-6%Al-4%V cylindrical root shaped samples were divided into three groups. Group I (Control): received no surface treatment, Group II: treated by PIII and Group III: subjected to Nd:YAG laser. The sterilized implants were inserted into Mongrel dogs’ femur for 6 months before animals scarification. Implants within bone blocks were used for histological assessment of the newly formed bone. For histomorphometric analysis, bone-to-implant contact (BIC %) was calculated. The collected data were statistically analyzed. Results: SEM of Group I showed regular parallel lines of cutting and polishing. Group II showed parallel homogenous straie of highly polished surface. Group III exhibited sealed machining and polishing marks due to ...
Objective: The present work evaluated histologically and immunohistochemically the expression of ... more Objective: The present work evaluated histologically and immunohistochemically the expression of leptin during healing of the incisional oral mucosal wound in diabetic rats as compared to healthy rats. Methods: Twenty-four adult male Sprague–Dawley rats weighing on average 150–200 g were allocated equally into two groups: Group I (control) and Group II (diabetic). Diabetes was induced by a single intraperitoneal injection of streptozotocin dissolved in distilled water. Each animal received experimental incision in buccal mucosa and sutured, and the specimens were collected from the buccal mucosa of each animal at intervals of 7, 14, and 21 days and routinely processed for H and E and immunohistochemical staining for leptin. All measurement data were calculated as a mean ± standard deviation. Results: Leptin expression was observed in the epithelium and the vascular endothelial cells in both groups. In both the control and diabetic groups, the expression of leptin was significantly i...
Background: Down syndrome is a genetic alteration that the affected individuals carry an extra ch... more Background: Down syndrome is a genetic alteration that the affected individuals carry an extra chromosome 21. These individuals have mental, physical and chronic medical conditions that require health care than normal individuals. There is a unique combination of dentofacial anomalies in Down syndrome individuals. All these factors and in addition to the lack of manual dexterity could compromise their adequate oral cleaning. Thus, these children are prone to various oral diseases that require early detection and treatment. Objectives: The aim of the study was to determine the prevalence of some selected oral and dental anomalies in Down syndrome children in Makkah and Jeddah, Saudi Arabia. Subjects and Methods: A sample of fifty Down syndrome (group I) Saudi children, age ranging between 4-14 years was subjected to an intraoral examination for some selected oral and dental anomalies. The control group (group II) includes fifty Saudi healthy children of both genders with matching age...
Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result,... more Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result, marginal leakage in conjunction with bonded restorations is greatly reduced, however true adhesive restorative materials do not exist at present, and the bonding is due to micromechanical retention of the resinous material to the tooth. As some endodontic sealing materials have high bond strength to dentin but may suffer from solubility and improper sealing ability. Consequently, evaluation of some properties of these materials may be advantageous for proper selection of which type to be used. Aim: The aim of this study was to evaluate the sealing capacity and the bond strength of two different types of root canal sealing materials. Methodology: A total of 20 single-rooted human mandibular premolar teeth with single canals were instrumented using step back technique. The prepared canals were obturated with lateral compaction technique using gutta percha and two different types of sealer...
Objectives: To study the prevalence of some selected oral and dental anomalies in mentally retard... more Objectives: To study the prevalence of some selected oral and dental anomalies in mentally retarded children in Makkah community. Subjects and Methods: A sample of two hundreds mentally retardedSaudi children, age ranging between 4 and 13 years, was subjected to an intraoral examination for some selected oral and dental anomalies. Out of the 200 children, 84 had Down’s syndrome (group I) and 116 had non syndromic mental retardation (group II). The findings were determined and compared to those of two hundreds healthy children (group III) using the appropriate statistical descriptive analysis. Results: All the mentally retarded children had at least one of the selected oral and dental anomalies. The prevalence of the selected oral and dental anomalies was 100%, 42% and 1% in group I, II, III respectively. Narrow high arched palate was the most prevalent anomaly in group I and III while microdontia was the most prevalent anomaly in group II. Conclusion: The findings of this study show...
Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion impl... more Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion implantation (PIII) and Nd:YAG laser, on topographical morphology and texture of Ti-alloy implants and consequently their osseointegration. Materials & Methods: Fifteen Ti-6%Al-4%V cylindrical root shaped samples were divided into three groups. Group I (Control): received no surface treatment, Group II: treated by PIII and Group III: subjected to Nd:YAG laser. The sterilized implants were inserted into Mongrel dogs' femur for 6 months before animals scarification. Implants within bone blocks were used for histological assessment of the newly formed bone. For histomorphometric analysis, bone-to-implant contact (BIC %) was calculated. The collected data were statistically analyzed. Results: SEM of Group I showed regular parallel lines of cutting and polishing. Group II showed parallel homogenous straie of highly polished surface. Group III exhibited sealed machining and polishing marks due...
The present work evaluated histologically and immunohistochemically the expression of leptin duri... more The present work evaluated histologically and immunohistochemically the expression of leptin during healing of the incisional oral mucosal wound in diabetic rats as compared to healthy rats. Twenty-four adult male Sprague-Dawley rats weighing on average 150-200 g were allocated equally into two groups: Group I (control) and Group II (diabetic). Diabetes was induced by a single intraperitoneal injection of streptozotocin dissolved in distilled water. Each animal received experimental incision in buccal mucosa and sutured, and the specimens were collected from the buccal mucosa of each animal at intervals of 7, 14, and 21 days and routinely processed for H and E and immunohistochemical staining for leptin. All measurement data were calculated as a mean ± standard deviation. Leptin expression was observed in the epithelium and the vascular endothelial cells in both groups. In both the control and diabetic groups, the expression of leptin was significantly increased with time, and there...
Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion impl... more Aim: To investigate the effect of physical surface treatments; plasma immersion nitrogen ion implantation (PIII) and Nd:YAG laser, on topographical morphology and texture of Ti-alloy implants and consequently their osseointegration. Materials & Methods: Fifteen Ti-6%Al-4%V cylindrical root shaped samples were divided into three groups. Group I (Control): received no surface treatment, Group II: treated by PIII and Group III: subjected to Nd:YAG laser. The sterilized implants were inserted into Mongrel dogs' femur for 6 months before animals scarification. Implants within bone blocks were used for histological assessment of the newly formed bone. For histomorphometric analysis, bone-to-implant contact (BIC %) was calculated. The collected data were statistically analyzed. Results: SEM of Group I showed regular parallel lines of cutting and polishing. Group II showed parallel homogenous straie of highly polished surface. Group III exhibited sealed machining and polishing marks due...
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