Sonia Abraham - Academia.edu (original) (raw)

Papers by Sonia Abraham

INDIAN JOURNAL OF APPLIED RESEARCH

Background: We conducted this study to gather baseline data on tooth loss and preferred prosthesi... more Background: We conducted this study to gather baseline data on tooth loss and preferred prosthesis as there were only few epidemiological studies on tooth loss, especially in young adults (18–26 years).Aim: The aim of the study is to analyze the prevalence of tooth loss and their preferred prosthesis among young adults (18-26years) who arrived to the private dental institutions for treatment or to accompany them. A total of 634 young adults (18-26 years) were included Materials and methodology: in the study, individual questionnaire were given for assess the oral health followed by examination of edentulism. Out of total samples 28.7% had Results: tooth loss, 71.3% don't. The causes of tooth loss are 67.9% tooth decay, 13.6% trauma, 10% congenital missing, and 8.6% mobility. The population with treatment needs 30.5%, 12.8% underwent treatment for tooth loss and 56.8% are not in need of treatment/not willing for treatment. The population preferred xed prosthesis is 49.8%, 10.2% ...

World Journal of Dentistry

Aim: To demonstrate the procedure for mounting the maxillary cast in the mean value articulator u... more Aim: To demonstrate the procedure for mounting the maxillary cast in the mean value articulator using a newly designed mounting device. Background: Fabrication of dental prostheses, especially by indirect technique, requires the use of an articulator. Apart from reducing the chair side time it has numerous advantages. However, accurate mounting of the cast in the articulator is mandatory to avoid fabrication errors. The techniques currently in use are either difficult to master or require costly equipment. This article describes a new technique for mounting the cast in a mean value articulator using a custom-made mounting device. Technique: The newly designed mounting device consists of a U-plate, an anterior rod, and two posterior rods. The mounting device is fixed to the articulator so that the anterior rod is inserted into the hole in the incisal pin and the posterior rods rest on the posterior reference bar. This places the U-plate at the level of the reference plane of the articulator. The maxillary cast with occlusal rim is placed over the U-plate and mounted using type II gypsum. The mandibular cast is later mounted in the articulator using the interocclusal record. Conclusion: As the wax mount is not necessary for this technique; the newly fabricated mounting device reduces the chances of error during the mounting of the maxillary cast that could occur during the conventional procedure. Clinical significance: Routine procedures commonly used were based on arbitrary methods (wax mounting) with a high chance of error, while other devices were expensive and selective in purpose. Therefore, the need for more accurate and precise methods are required instead.

The Journal of Contemporary Dental Practice

Aim: To find and compare the amount of screw loosening in gold and titanium alloy abutment screws... more Aim: To find and compare the amount of screw loosening in gold and titanium alloy abutment screws without any cyclic load, this study was performed. Materials and methods: A total of 20 implant fixture screw samples with 10 gold abutment screws from Osstem and 10 titanium alloy abutment screws from Genesis. Implant fixtures were placed into the acrylic resin using a surveyor to maintain the same path of insertion. Using a hex driver and calibrated torque wrench, initial torque was given according to the manufacturer's recommendation. One vertical and other horizontal lines were drawn over the head of the hex driver and resin block. Acrylic block position was standardized using a putty index in a fixed table and using a tripod stand a digital single-lens reflex camera (DSLR) camera was positioned with its horizontal arm facing the floor, as well as perpendicular to the acrylic box. Photographs were taken immediately after the application of the initial torque given as per the manufacturer's recommendation and 10 minutes after the initial torque. Re-torque of 30 and 35 N cm was given to gold and titanium alloy abutment screws respectively. Photographs were taken again in that same position immediately after re-torquing and 3 hours after re-torquing. The photographs were uploaded into the Fiji-win64 analysis software and the angulations were measured in each photograph. Results: Both the gold and titanium alloy abutment screws exhibited screw loosening after initial torquing. There was a significant difference in the amount of screw loosening between gold and titanium alloy abutment screws after initial torquing and no change in the abutment screw position after three hours of re-torquing. Conclusion: Re-torquing of both gold and titanium alloy abutment screws after 10 minutes of initial torquing should be performed routinely for retaining the preload and minimizing the screw loosening even before loading the implant fixture. Clinical significance: Gold abutment screws may have the ability to retain the preload better than the titanium alloy abutment screws after initial torquing, re-torquing may be necessary after 10 minutes to reduce the settling effect in a routine clinical procedure.

World Journal of Dentistry, 2022

Aim: To demonstrate the procedure for mounting the maxillary cast in the mean value articulator u... more Aim: To demonstrate the procedure for mounting the maxillary cast in the mean value articulator using a newly designed mounting device. Background: Fabrication of dental prostheses, especially by indirect technique, requires the use of an articulator. Apart from reducing the chair side time it has numerous advantages. However, accurate mounting of the cast in the articulator is mandatory to avoid fabrication errors. The techniques currently in use are either difficult to master or require costly equipment. This article describes a new technique for mounting the cast in a mean value articulator using a custom-made mounting device. Technique: The newly designed mounting device consists of a U-plate, an anterior rod, and two posterior rods. The mounting device is fixed to the articulator so that the anterior rod is inserted into the hole in the incisal pin and the posterior rods rest on the posterior reference bar. This places the U-plate at the level of the reference plane of the articulator. The maxillary cast with occlusal rim is placed over the U-plate and mounted using type II gypsum. The mandibular cast is later mounted in the articulator using the interocclusal record. Conclusion: As the wax mount is not necessary for this technique; the newly fabricated mounting device reduces the chances of error during the mounting of the maxillary cast that could occur during the conventional procedure. Clinical significance: Routine procedures commonly used were based on arbitrary methods (wax mounting) with a high chance of error, while other devices were expensive and selective in purpose. Therefore, the need for more accurate and precise methods are required instead.

Indian Journal of Dental Sciences

Journal of Pharmacy And Bioallied Sciences

for his expert guidance and moral support during the completion of this study. I consider myself ... more for his expert guidance and moral support during the completion of this study. I consider myself privileged, to have studied, worked and completed my dissertation under them in the department. My sincere thanks to Dr.S.Thillainayagam MDS. , our beloved Principal, Adhiparasakthi Dental College and Hospital, Melmaruvathur for providing me with the opportunity to utilize the facilities of the college. I thank our Correspondent Dr.T.Ramesh MD., for his vital encouragement and support. I am extremely thankful to my teachers Dr.K.Prabhu MDS., Reader, Dr.Arunkumar MDS., Senior lecturer, for their valuable suggestions, constant encouragement and timely help rendered throughout this study. I owe my gratitude to my father Mr.M.Chandrasekaran MA., and my mother Mrs.M.Vasanthi MA.M.Ed., who stood beside me during my hard time and sacrificed so much to make me what I am today. I also thank my loving sisters Mrs.V.C.Ramya MBA., and

INDIAN JOURNAL OF APPLIED RESEARCH

Background: We conducted this study to gather baseline data on tooth loss and preferred prosthesi... more Background: We conducted this study to gather baseline data on tooth loss and preferred prosthesis as there were only few epidemiological studies on tooth loss, especially in young adults (18–26 years).Aim: The aim of the study is to analyze the prevalence of tooth loss and their preferred prosthesis among young adults (18-26years) who arrived to the private dental institutions for treatment or to accompany them. A total of 634 young adults (18-26 years) were included Materials and methodology: in the study, individual questionnaire were given for assess the oral health followed by examination of edentulism. Out of total samples 28.7% had Results: tooth loss, 71.3% don't. The causes of tooth loss are 67.9% tooth decay, 13.6% trauma, 10% congenital missing, and 8.6% mobility. The population with treatment needs 30.5%, 12.8% underwent treatment for tooth loss and 56.8% are not in need of treatment/not willing for treatment. The population preferred xed prosthesis is 49.8%, 10.2% ...

World Journal of Dentistry

Aim: To demonstrate the procedure for mounting the maxillary cast in the mean value articulator u... more Aim: To demonstrate the procedure for mounting the maxillary cast in the mean value articulator using a newly designed mounting device. Background: Fabrication of dental prostheses, especially by indirect technique, requires the use of an articulator. Apart from reducing the chair side time it has numerous advantages. However, accurate mounting of the cast in the articulator is mandatory to avoid fabrication errors. The techniques currently in use are either difficult to master or require costly equipment. This article describes a new technique for mounting the cast in a mean value articulator using a custom-made mounting device. Technique: The newly designed mounting device consists of a U-plate, an anterior rod, and two posterior rods. The mounting device is fixed to the articulator so that the anterior rod is inserted into the hole in the incisal pin and the posterior rods rest on the posterior reference bar. This places the U-plate at the level of the reference plane of the articulator. The maxillary cast with occlusal rim is placed over the U-plate and mounted using type II gypsum. The mandibular cast is later mounted in the articulator using the interocclusal record. Conclusion: As the wax mount is not necessary for this technique; the newly fabricated mounting device reduces the chances of error during the mounting of the maxillary cast that could occur during the conventional procedure. Clinical significance: Routine procedures commonly used were based on arbitrary methods (wax mounting) with a high chance of error, while other devices were expensive and selective in purpose. Therefore, the need for more accurate and precise methods are required instead.

The Journal of Contemporary Dental Practice

Aim: To find and compare the amount of screw loosening in gold and titanium alloy abutment screws... more Aim: To find and compare the amount of screw loosening in gold and titanium alloy abutment screws without any cyclic load, this study was performed. Materials and methods: A total of 20 implant fixture screw samples with 10 gold abutment screws from Osstem and 10 titanium alloy abutment screws from Genesis. Implant fixtures were placed into the acrylic resin using a surveyor to maintain the same path of insertion. Using a hex driver and calibrated torque wrench, initial torque was given according to the manufacturer's recommendation. One vertical and other horizontal lines were drawn over the head of the hex driver and resin block. Acrylic block position was standardized using a putty index in a fixed table and using a tripod stand a digital single-lens reflex camera (DSLR) camera was positioned with its horizontal arm facing the floor, as well as perpendicular to the acrylic box. Photographs were taken immediately after the application of the initial torque given as per the manufacturer's recommendation and 10 minutes after the initial torque. Re-torque of 30 and 35 N cm was given to gold and titanium alloy abutment screws respectively. Photographs were taken again in that same position immediately after re-torquing and 3 hours after re-torquing. The photographs were uploaded into the Fiji-win64 analysis software and the angulations were measured in each photograph. Results: Both the gold and titanium alloy abutment screws exhibited screw loosening after initial torquing. There was a significant difference in the amount of screw loosening between gold and titanium alloy abutment screws after initial torquing and no change in the abutment screw position after three hours of re-torquing. Conclusion: Re-torquing of both gold and titanium alloy abutment screws after 10 minutes of initial torquing should be performed routinely for retaining the preload and minimizing the screw loosening even before loading the implant fixture. Clinical significance: Gold abutment screws may have the ability to retain the preload better than the titanium alloy abutment screws after initial torquing, re-torquing may be necessary after 10 minutes to reduce the settling effect in a routine clinical procedure.

World Journal of Dentistry, 2022

Aim: To demonstrate the procedure for mounting the maxillary cast in the mean value articulator u... more Aim: To demonstrate the procedure for mounting the maxillary cast in the mean value articulator using a newly designed mounting device. Background: Fabrication of dental prostheses, especially by indirect technique, requires the use of an articulator. Apart from reducing the chair side time it has numerous advantages. However, accurate mounting of the cast in the articulator is mandatory to avoid fabrication errors. The techniques currently in use are either difficult to master or require costly equipment. This article describes a new technique for mounting the cast in a mean value articulator using a custom-made mounting device. Technique: The newly designed mounting device consists of a U-plate, an anterior rod, and two posterior rods. The mounting device is fixed to the articulator so that the anterior rod is inserted into the hole in the incisal pin and the posterior rods rest on the posterior reference bar. This places the U-plate at the level of the reference plane of the articulator. The maxillary cast with occlusal rim is placed over the U-plate and mounted using type II gypsum. The mandibular cast is later mounted in the articulator using the interocclusal record. Conclusion: As the wax mount is not necessary for this technique; the newly fabricated mounting device reduces the chances of error during the mounting of the maxillary cast that could occur during the conventional procedure. Clinical significance: Routine procedures commonly used were based on arbitrary methods (wax mounting) with a high chance of error, while other devices were expensive and selective in purpose. Therefore, the need for more accurate and precise methods are required instead.

Indian Journal of Dental Sciences

Journal of Pharmacy And Bioallied Sciences

for his expert guidance and moral support during the completion of this study. I consider myself ... more for his expert guidance and moral support during the completion of this study. I consider myself privileged, to have studied, worked and completed my dissertation under them in the department. My sincere thanks to Dr.S.Thillainayagam MDS. , our beloved Principal, Adhiparasakthi Dental College and Hospital, Melmaruvathur for providing me with the opportunity to utilize the facilities of the college. I thank our Correspondent Dr.T.Ramesh MD., for his vital encouragement and support. I am extremely thankful to my teachers Dr.K.Prabhu MDS., Reader, Dr.Arunkumar MDS., Senior lecturer, for their valuable suggestions, constant encouragement and timely help rendered throughout this study. I owe my gratitude to my father Mr.M.Chandrasekaran MA., and my mother Mrs.M.Vasanthi MA.M.Ed., who stood beside me during my hard time and sacrificed so much to make me what I am today. I also thank my loving sisters Mrs.V.C.Ramya MBA., and