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Bones in the Wilderness ¡¤ Twenty Three

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    As he spoke, Brother Ming picked out the skull of the deceased, pointed to the position of his mouth and said:

    "From the degree of bone development of the deceased, it is not difficult to tell that the deceased has reached adulthood. The most accurate way to judge the age of an adult is to observe the wear characteristics of the teeth."

    "The wear characteristics of teeth?" I heard that this term seemed to have something to do with our trace science, so I concentrated my attention.

    Brother Ming glanced at me and made sure that my eyes were focused on the direction of his fingertips, and then said: "When people eat food, due to chewing movements, friction occurs between teeth and food, and between teeth.  This results in wear of the occlusal surfaces and incisal ends of the teeth. After the adult teeth are fully developed, they will hardly change. Therefore, the degree of wear of the adult teeth will increase with age. We use this wear characteristic of the teeth  There are a lot of clues to be found.¡±

    "Clue?" Ye Qian shouted excitedly.

    Brother Ming nodded and continued: "I will give you a few examples and you will have a rough understanding. For example, shoemakers often bite their shoe nails with their teeth, which will cause serious wear on their incisors. People who like to smoke pipes  , the lateral incisors wear more heavily. There are also people who have been engaged in sewing for a long time, because they often bite the thread with their teeth, which will also cause unique wear characteristics. In fact, the most vivid ones are some scenes in old movies. If you observe carefully enough, you will  I found that the landowners at that time liked to have their teeth encrusted with gold.¡±

    ¡°It seems that Zhou Papi has it!¡± I recalled a scene from an old movie.

    Brother Ming nodded: "At that time, rural people ate rough, hard whole grains as their staple food, and their teeth were severely worn. If the teeth were not braced in advance, they would not be able to chew anything when they were old."

    I didn¡¯t expect that a seemingly easy-to-ignore wear feature could sum up so many things. I couldn¡¯t help but admire Brother Ming in my heart.

    Ming Ge did not stop: "Usually, the wear characteristics of teeth can be divided into grades from zero to five or six. Grade zero means the enamel is slightly worn away; grade one means the enamel is smoothed; grade two means the teeth are exposed in spots; grade three  Level 4 refers to tooth strips being exposed; Level 4 refers to high degree of tooth erosion; Level 5 refers to exposure of the pulp chamber."

    ¡°Zero-level wear generally occurs only under the age of twenty, first-level wear occurs between the ages of twenty-one and thirty, second-level wear occurs between the ages of thirty-one and forty, and third-level wear occurs between the ages of forty-one and forty-one.  to the age of fifty, level four attrition is for those aged fifty-one to sixty-five, and level five attrition is for those aged over sixty-five.¡±

    "Through the comprehensive analysis of the wear of the deceased's teeth, it should be a third-level wear. His approximate age should be between forty-one and fifty years old. Combined with the developmental characteristics of the deceased's skull, I can conclude that the specific age of the deceased should be between  Between forty-five and fifty years old. I can¡¯t be too specific before the criminal police team investigates.¡±

    Listening to his tone, he may have already known the exact age of the deceased in his mind, but in order to be conservative, Brother Ming gave an estimate with an error of within five years.

    "Director Leng, can you tell the time of death of the deceased?" Ye Qian still asked.

    "I can only make a rough analysis, but there are still errors. If you want to get the exact answer, you have to wait for Guoxian's test results."

    Hearing what Brother Ming said, I quickly understood the deeper meaning. What he meant was to use DNA comparison technology to determine the time of death.

    "If the deceased had family members, it would be impossible not to report the case for such a long time. When reporting a missing person case at the police station, the first step according to the general procedure is to collect DNA blood samples from the deceased's immediate family members.

    Brother Ming means that if the family members of the deceased report the crime, we only need to collect the DNA of the deceased and compare it to find out the situation of the family members.  Then the family members of the deceased can be asked about the exact time of disappearance. This accuracy can be accurate to the day, which is definitely much more reasonable than blind inference.

    "By the way, Director Leng, how did the deceased's fatal injury occur? Why is the wound so strange?" Ye Qian looked like she was asking for the truth.

    Brother Ming frowned slightly, staring at the two rows of scar-like wounds and lost in thought.

    "Could it be a business card?" I suddenly remembered the movie "Young and Dangerous".

    "What is a business card?" Ye Qian shifted her gaze to me, with a confused look on her face.

    "A handblade is a weapon that is worn on the hand. There are spikes on the top of the bracelet. During a fight, the sharp spikes are like a knife and can penetrate any part of the opponent. If the spikes are sharp enough,  In this case, is it possible to pierce the skull?" I asked Brother Ming tentatively.

    "You said it's very possible that if you apply the right force, it's easy to pierce the skull."??And I just observed that there are a large number of dot-like marks on the skull of the deceased. These marks should be formed by insufficient force, because the skull was not penetrated and did not attract our attention.  "

    I was so happy when I received Brother Ming¡¯s confirmation.

    "Could it be a taxi robbery and murder?" Brother Ming's brows knitted together.

    "What? Rob a taxi and kill someone?" Ye Qian asked loudly.

    "It is not difficult to see from the fatal injuries on the deceased's head that in order to cause such injuries, there must be a certain height difference between the suspect and the deceased. Moreover, except for the unopened CD, no property was found on the deceased's body.  , could the suspect be the passenger of the deceased, and after killing the deceased, took away the car and money, and buried the body in the field?"

    After listening to Brother Ming¡¯s words, my little heart trembled hard. If the nature of the case was really taxi robbery and murder, it would be troublesome.  There is no intersection between the suspect and the deceased in this case. Even if we find out the identity of the deceased, it has been so long and the evidence at the scene is missing. How should we start to find the suspect whose circumstances are unknown?

    Taxi robbery and murder are temporary cases reported to the police. The suspects in this case choose random targets. To put it bluntly, they target whomever they target. Therefore, it is quite difficult to solve this kind of case.

    Not long after the analysis of the deceased¡¯s bones was completed, Lao Xian¡¯s inspection work was almost completed.

    The five of us sat together as quickly as possible and began to check all the physical evidence in this case.

    The meeting is still chaired by Brother Ming.

    "Xiaolong, do you have anything else to say?"

    "Other than analyzing the professional characteristics of the deceased, I don't have any good clues."

    "Jiao Lei, where are you?"

    "Not yet."

    "Ye Qian, did their criminal police team find out the origin of the CD next to the deceased?"

    When Ye Qian heard Brother Ming calling her name, she couldn't wait to open her notebook. It was difficult for Ye Qian to interject in a professional discussion like this. It was rare that she could say a few words this time.  With her temperament, it would be strange not to be excited.  (Remember the website address: www.hlnovel.com
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