An Evaluation of Iatrogenic Damage to the Adjacent Teeth During Crown and Bridge Preparation: An In-Vitro Study

Khalid Omar Alzwaghi; Fatema Esmeda; Abdussalam Eljabali; Ghada Alzwaghi; Fatima Ben Noor

doi:10.69667/lmj.2517116

Authors

Khalid Omar Alzwaghi Department of Fixed Prosthodontics, Faculty of Dentistry, University of Tripoli, Tripoli, Libya https://orcid.org/0000-0001-9556-3217
Fatema Esmeda Department of Fixed Prosthodontic, University of Zawia, Zawia, Libya https://orcid.org/0009-0008-7189-3236
Abdussalam Eljabali Department of Dental Technology, Faculty of Medical Technology, University of Tripoli, Tripoli, Libya https://orcid.org/0000-0003-4854-5117
Ghada Alzwaghi Sabratha Herat Medical Center, Sabratha, Libya https://orcid.org/0000-0001-7104-5693
Fatima Ben Noor Sabratha Herat Medical Center, Sabratha, Libya https://orcid.org/0000-0002-0485-8405

DOI:

https://doi.org/10.69667/lmj.2517116

Keywords:

Crown and bridge, Iatrogenic damage, teeth preparation, proximal surfaces.

Abstract

The proper tooth preparation should not damage the neighboring tooth surfaces. Accidental damage during teeth preparation is considered an important concern that dentists often face throughout restorative procedures. The purpose of the following study is to evaluate the amount and frequency of accidental injury to the interproximal surface of nearby teeth, subsequent teeth preparation, Setting: among dental practioner in private dental laboratories in west of Libya. An example (n=80) of a working cast list used for crown and bridgework was sampled from Alzendah and Hi-Tech dental commercial laboratories in west of Tripoli Libya. Tooth surfaces were examined on master casts by direct vision by one observer. Statistics were investigated by using SPSS. A high incidence of iatrogenic injury to the mesial and distal surfaces of adjoining teeth where mesial 78% and 73% on distal surface, (p<0.044) was detected, more common in molar teeth (67%) than anterior teeth (45%). The most common accidental damage was abrasion and nick, then abrasion. The prevalence of injury was established to be higher in general dental practitioners and was significantly associated with mainly mesial surface, mostly in the middle third of the proximal surface (45%). More injuries were observed in the maxilla in comparison to the mandible. A high rate of accidental damage to the neighboring teeth has been present through crown and restorative work, middle-third of the tooth with mild abrasions more risk location and surfaces. The present research work places of interest the need for dentists to exercise more with preparations and casts making.

يجب ألا يؤدي التحضير المناسب للأسنان إلى إتلاف أسطح الأسنان المجاورة. يعتبر الضرر العرضي أثناء تحضير الأسنان مصدر قلق مهم يواجهه أطباء الأسنان غالبًا أثناء إجراءات الترميم. الغرض من الدراسة التالية هو تقييم كمية وتكرار الإصابة العرضية للسطح بين الأسنان القريبة، وتحضير الأسنان اللاحق، والوضع: بين ممارسي طب الأسنان في مختبرات الأسنان الخاصة في غرب ليبيا. تم أخذ عينة من مثال (ن = 80) لقائمة قالب عمل تستخدم في أعمال التاج والجسور من مختبرات الزنداه وهاي تيك التجارية لطب الأسنان في غرب طرابلس ليبيا. تم فحص أسطح الأسنان على قوالب رئيسية بالرؤية المباشرة من قبل مراقب واحد. تم التحقيق في الإحصاءات باستخدام برنامج SPSS. تم الكشف عن ارتفاع معدل الإصابة المنشأ طبيًا للسطح الأوسط والبعيد للأسنان المجاورة حيث تم الكشف عن 78٪ و 73٪ على السطح البعيد، (ص <0.044)، وهو أكثر شيوعًا في الأضراس (67٪) من الأسنان الأمامية (45٪). كان الضرر العرضي الأكثر شيوعًا هو التآكل والخدش، ثم التآكل. وقد ثبت أن انتشار الإصابة أعلى لدى أطباء الأسنان العامين وكان مرتبطًا بشكل كبير بالسطح الأوسط بشكل أساسي، وخاصة في الثلث الأوسط من السطح القريب (45٪). لوحظت إصابات أكثر في الفك العلوي مقارنة بالفك السفلي. كان معدل التلف العرضي للأسنان المجاورة مرتفعًا من خلال أعمال التاج والترميم، حيث كان الثلث الأوسط من السن مع التآكل الخفيف أكثر عرضة للخطر في الموقع والأسطح. يضع عمل البحث الحالي اهتمامًا بالحاجة إلى أن يمارس أطباء الأسنان المزيد من التمارين مع الاستعدادات وصنع القوالب

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