Pretend you are a teacher preparing a quiz for the text I will provide. 
            Each quiz question should follow the format below. 
            Ensure that you carefully recheck the questions and answers for accuracy. 
            The output should be a ready-to-use list of dictionaries for the Python eval function:

            [

                    "question": "WRITE THE QUESTION HERE",
                    "options": ["A) OPTION_1", "B) OPTION_2", "C) OPTION_3", "D) OPTION_4"],
                    "answer": INDEX_OF_CORRECT_ANSWER_IN_OPTIONS_LIST,
                    "explanation": "EXPLAIN WHY THE ANSWER IS CORRECT"

            ]

            Text:
             the blade is replaced by a nib or point. These are divided 
according to function into: - 
1- Diagnostic instruments  
2- Plastic instruments  
3- Amalgam instruments 
1. Diagnostic instruments: These are basic instruments that will be needed 
during each appointment for diagnosis and treatment. Fig 6. 
a. Mirror: used for:  
- Indirect visualization of any tooth surface that cannot be seen by the eye.  
- Reflection of light into the area being examined or treated. 
 - Retractor of soft tissue (tongue, cheek and lip) to aid access and visualization.  
b. Probe or explorer: pointed instruments used: 
 - To check tooth surface for irregularities  
- To determine the hardness of exposed dentin and caries detection. - Probes have 
different shapes either sickle, straight or angled  
c. Tweezer or cotton forceps: used for aiding the operator to carry small items to 
the mouth of the patient. 
 
Fig. (6): diagnostic instruments 
2. Plastic instruments: Or plastic filling instrument are used to: 
 - Carry and shape tooth colored restorative material such as composite resin and 
glass ionomer. 
 - packing temporary filling material inside unfilled cavies preparation.  
- Or for placing of basing and lining material into the cavities. In past these 
instruments are made of plastic. 
 Ash 49: - is one of plastic instrument similar to carver but the margin of its 
working end is not sharp. Fig. (7): A  
Ash 6: - is double ended instrument with cylindrical nibs and rounded ends. Fig. 
(7): B  
Dycal applicator: - is small hand instrument with small round nib used for mixing 
and placing dycal lining material in the cavity. Fig. (7): C  
Cement spatula: - it is used for mixing variety of material which required mixing 
(such as cement or temporary filling material) on glass or on a paper pad. Fig. (7): 
D 
 
Fig. (7): Plastic instruments 
3. Amalgam instruments 
 Those instruments used to place dental amalgam, and to a certain extent, resin 
composite restorative material.  
Condensers: - condensers are used to compress the amalgam into all areas of the 
prepared cavity. The working end or nib of the condenser is usually round with flat 
end (face). The nibs have different shapes triangular, rectangular or diamond shape 
ends. Fig (8). 
 
Fig. (8): Condenser 
Burnisher: It have different nib shapes: round, oval or rounded cone shapes, also 
with different sizes, used for several functions such as ;( 9). 
 • burnishing of the amalgam on the margins of the cavity.  
• smoothing of the carved amalgam surface. 
 • shaping metal matrix band to have more desirable contours for restoration.  
• bend cast gold restoration (inlay or onlay) near the margin of the prepared cavity 
to narrow the gap between gold and the tooth. 
 
Fig. (9): Burnisher 
Carver: - carvers are used to shape amalgam or resin composites (tooth colored) 
material after they have been placed in the tooth preparations. Carvers have many 
shapes but usually the nibs are flat with sharp margins fo

            Quiz: